Belly Conklin, a teenage girl, is excited for the summer as she and her family head to Cousins Beach, where they have spent every summer since she was a child. This year feels different for Belly, as she is now 16 and has begun to notice the boys around her differently, particularly the Fisher brothers, Conrad and Jeremiah. The opening scenes establish Belly's close relationship with her mother, Laurel, and her younger brother, Steven, as they arrive at the beach house, which is owned by Laurel's best friend, Susannah Fisher.

Upon arrival, Belly is immediately greeted by the familiar sights and sounds of the beach, but her excitement is tinged with anxiety about how the boys will perceive her this summer. She has had a crush on Conrad for years, but he has always been distant and aloof. Jeremiah, on the other hand, is more friendly and approachable. The dynamics between the three teens are established as they interact, with Belly feeling a mix of hope and insecurity.

As the summer progresses, Belly attends a party with the boys, where she feels out of place but also exhilarated. At the party, she catches Conrad's attention, and they share a moment that leaves her feeling hopeful. However, Conrad's mood shifts, and he becomes withdrawn again, leaving Belly confused about his feelings. Jeremiah, in contrast, is more openly affectionate and supportive, which complicates Belly's feelings further.

Belly's relationship with her mother is explored as Laurel reveals her own struggles with the past, particularly regarding Susannah's health. Susannah is battling cancer, and this looming reality casts a shadow over the summer. Belly feels the weight of this knowledge but tries to maintain a sense of normalcy and joy during her time at the beach.

As the summer continues, Belly and the boys engage in various activities, including beach outings and family gatherings. Tensions rise when Belly learns that Susannah's condition is worsening, and she grapples with the fear of losing someone she loves. This emotional turmoil affects her interactions with Conrad and Jeremiah, as she seeks comfort and understanding from them.

A pivotal moment occurs when Belly and Conrad share a passionate kiss, igniting a whirlwind of emotions for Belly. She feels elated but also anxious about what this means for their relationship. However, Conrad's subsequent withdrawal leaves her feeling rejected and confused. Meanwhile, Jeremiah expresses his feelings for Belly, complicating her emotions further as she navigates her attraction to both brothers.

The climax of the season arrives during a family gathering where tensions between the characters come to a head. Belly confronts Conrad about his mixed signals, leading to a heated argument that reveals deeper issues within the Fisher family. Conrad's struggles with his mother's illness and his own emotional barriers are laid bare, forcing Belly to confront her feelings for him and the reality of their situation.

In the aftermath of the confrontation, Belly feels lost and uncertain about her place in the Fisher family and her relationships with the boys. She seeks solace in her friendship with Jeremiah, who continues to be a source of support. However, the unresolved tension with Conrad lingers, creating a rift between the three of them.

As the summer draws to a close, Belly faces the reality of returning home and the changes that have occurred. The emotional weight of the summer, combined with the impending loss of Susannah, leaves Belly feeling reflective and somber. The season ends with a sense of unresolved tension, as Belly must come to terms with her feelings for both brothers and the impact of the summer on her life moving forward.

At the end of "The Summer I Turned Pretty," Belly finds herself at a crossroads in her relationships with the Fisher brothers, Conrad and Jeremiah. After a summer filled with emotional turmoil, she ultimately chooses to pursue a deeper connection with Conrad, despite the complexities of their past. The season concludes with a poignant moment that leaves viewers anticipating the future of these relationships.

As the final episode unfolds, the atmosphere is thick with tension and unresolved feelings. Belly, having spent the summer at Cousins Beach, is grappling with her feelings for both Conrad and Jeremiah. The summer has been a transformative experience for her, marking her transition from childhood to young adulthood.

Scene by scene, the narrative begins with Belly reflecting on her time at the beach house, where memories of laughter and heartache intertwine. The sun sets over the ocean, casting a golden hue that mirrors her mixed emotions. She recalls the moments shared with both brothers, each representing different aspects of her life and desires.

In a pivotal scene, Belly confronts Conrad about their relationship. The air is charged with unspoken words as they stand on the porch, the sound of waves crashing in the background. Conrad, who has been distant and brooding throughout the summer, finally opens up about his feelings. He reveals the struggles he has faced, particularly regarding his mother's illness and the weight of family expectations. This moment of vulnerability draws Belly closer to him, igniting the spark that has always existed beneath the surface.

Meanwhile, Jeremiah, who has been Belly's steadfast friend and confidant, senses the shift in her affections. He watches from a distance, his heart heavy with the realization that Belly's feelings for him may not be as deep as he hoped. In a quiet moment, he approaches Belly, expressing his feelings and the bond they share. However, Belly's heart is torn, and she struggles to articulate her emotions, feeling the pressure of the choices before her.

As the episode progresses, the tension culminates in a dramatic confrontation at a beach bonfire. Friends and family gather, but the focus is on the three of them. Belly stands between the two brothers, each representing a different path for her future. The flames flicker, casting shadows that symbolize the uncertainty of her choice.

In a moment of clarity, Belly makes her decision. She chooses to pursue a relationship with Conrad, acknowledging the depth of their connection and the history they share. This choice is not made lightly; it is filled with the weight of past summers, laughter, and heartbreak. As she walks towards Conrad, the atmosphere shifts, and the warmth of the bonfire mirrors the rekindling of their relationship.

The season concludes with Belly and Conrad sharing a tender moment, their hands brushing against each other as they stand close, the world around them fading away. Jeremiah, though heartbroken, puts on a brave face, understanding that love is complicated and sometimes unrequited. The camera captures the bittersweet expressions on their faces, leaving viewers with a sense of longing and anticipation for what lies ahead.

In the final scenes, Belly reflects on her journey, realizing that this summer has changed her forever. The ocean waves crash against the shore, symbolizing the ebb and flow of love and relationships. As the screen fades to black, the audience is left with the lingering question of how these choices will shape their futures, setting the stage for the next chapter in their lives.

In "The Summer I Turned Pretty," Season 1, there is no post-credit scene. The season concludes without any additional scenes after the credits roll, focusing instead on wrapping up the main narrative arcs and emotional developments of the characters. The final moments of the season leave viewers with a sense of anticipation for the next chapter in the story, but there are no extra scenes to provide further insight or tease future events.

The summer house serves as a central setting for the characters, particularly for Belly, who has spent her summers there since childhood. It symbolizes nostalgia, family bonds, and the transition from childhood to adulthood. The house is filled with memories of past summers, and it becomes a backdrop for the evolving relationships between Belly, Conrad, and Jeremiah.

Belly's relationship with Conrad is complex and filled with tension. Initially, she harbors a long-standing crush on him, which is complicated by his aloofness and emotional struggles. As the season progresses, moments of vulnerability and connection emerge, particularly when they share intimate conversations and experiences, revealing deeper feelings. However, Conrad's internal conflicts and his protective nature towards his family create obstacles in their budding romance.

Jeremiah serves as a close friend and confidant to Belly, providing her with support and companionship. He is more openly affectionate and playful compared to Conrad, which makes him a source of comfort for Belly. As the summer unfolds, Jeremiah's feelings for Belly become more apparent, leading to a love triangle that complicates their friendship and adds emotional depth to the narrative.

Belly's relationship with her mother, Laurel, is characterized by a mix of admiration and frustration. Laurel is protective and often tries to guide Belly through her emotional experiences, especially regarding boys and growing up. However, Belly feels misunderstood at times, particularly when it comes to her feelings for Conrad and Jeremiah. Their interactions highlight the generational differences in understanding love and relationships, adding layers to Belly's coming-of-age journey.

Jealousy plays a significant role in the interactions between Belly, Conrad, and Jeremiah. Belly's feelings for Conrad create tension, especially when she perceives Jeremiah's growing affection for her. Similarly, Conrad's jealousy surfaces when he sees Belly and Jeremiah getting closer, leading to emotional confrontations. This jealousy not only drives the plot but also reveals the characters' insecurities and desires, making their relationships more complicated and relatable.

"The Summer I Turned Pretty" is generally considered family-friendly, but it does contain some themes and scenes that may be sensitive for younger viewers or those who are particularly sensitive. Here are some aspects to consider:

1. Romantic Relationships: The show explores teenage romance, including crushes and love triangles, which may involve emotional intensity and heartbreak.

2. Family Dynamics: There are scenes that depict complex family relationships, including discussions about divorce and the impact of loss, which could be emotionally heavy.

3. Jealousy and Rivalry: The characters experience jealousy and rivalry, which can lead to conflicts and emotional distress.

4. Mature Themes: While not explicit, there are references to growing up, self-discovery, and the challenges of adolescence that may resonate differently with younger audiences.

5. Emotional Moments: The show includes scenes that evoke strong emotions, such as sadness, longing, and nostalgia, which might be upsetting for some viewers.

Overall, while the series is aimed at a young adult audience and contains relatable themes, parents may want to consider these elements when deciding if it's suitable for younger viewers.