Marta's relationship with her family takes a significant turn in this episode as she begins to assert her independence. She has a poignant conversation with her mother, who struggles to understand Marta's need for freedom. This moment highlights Marta's internal struggle between familial expectations and her desire to carve her own path.

Eva grapples with jealousy throughout the episode, particularly as she sees Marta becoming more independent and confident. She tries to mask her feelings by being supportive, but her internal struggle is palpable. This culminates in a moment where she confides in a close friend, revealing her fears of losing Marta and her own insecurities.

In Episode 4, the tension between Marta and Eva escalates as they confront their differing views on their future. Marta feels trapped in her current situation and yearns for independence, while Eva is more cautious and focused on stability. This clash leads to a heated argument that reveals deeper insecurities and desires.

The new character, a mutual friend named Clara, serves as a catalyst for the conflict between Marta and Eva. Clara's carefree attitude and adventurous spirit inspire Marta to pursue her dreams, which causes Eva to feel threatened and protective. This dynamic adds layers to the existing friendship and forces both Marta and Eva to reevaluate their priorities.

By the end of Episode 4, Marta makes a pivotal decision to pursue a job opportunity that would take her away from their hometown. This choice symbolizes her commitment to personal growth and independence, but it also creates a rift between her and Eva, who feels abandoned and anxious about the future of their friendship.