In the ending of Final Destination 3, Wendy and her friend Kevin believe they have escaped Death after a series of deadly events. However, they soon realize that Death is still pursuing them. The film concludes with a shocking twist as Wendy and Kevin are killed in a tragic accident, revealing that they were never truly safe.

As the film approaches its climax, Wendy and Kevin, having survived the initial disaster of the roller coaster crash, find themselves grappling with the reality that Death is not finished with them. They have witnessed the gruesome deaths of their friends, each one a result of a chain reaction set in motion by their escape from the roller coaster.

Scene by scene, the tension escalates. Wendy, haunted by the visions she has experienced, becomes increasingly paranoid. She and Kevin try to piece together the clues from the photographs Wendy took at the amusement park, which seem to predict the deaths of their friends. They realize that they must find a way to outsmart Death, but the pressure mounts as they see their friends fall one by one.

In a pivotal moment, Wendy and Kevin attend a funeral for one of their friends, where they are confronted by the reality of their situation. The atmosphere is heavy with grief, and Wendy feels the weight of survivor's guilt. She is determined to find a way to break the cycle of Death, but her resolve is tested as she witnesses the aftermath of the tragic events.

As they continue to investigate, they discover that the only way to potentially escape Death is to kill someone who was meant to die in the original accident. This leads to a frantic search for a solution, but time is running out. The tension builds as they realize that Death is closing in on them once again.

In the final scenes, Wendy and Kevin believe they have found a way to cheat Death. They are filled with a mix of hope and dread as they think they have outsmarted the grim force that has been hunting them. However, in a cruel twist of fate, they are struck by a train while celebrating their perceived victory. The screen fades to black, leaving the audience with the chilling realization that Death is inescapable.

The film concludes with a montage of the characters' fates, showing that despite their efforts, they were never truly safe. Wendy and Kevin's deaths serve as a stark reminder of the inevitability of fate, and the cycle of Death continues, leaving a haunting impression on the viewer.

Final Destination 3 does not have a post-credit scene. The film concludes with a climactic sequence that wraps up the story without any additional scenes after the credits. The final moments depict Wendy and her friend Kevin escaping what they believe to be their fated deaths, only for the film to reveal that Death is still at work, leading to a shocking twist that suggests their survival was only temporary. The credits roll without any further content, leaving the audience with a sense of unease about the inevitability of fate.

The main characters' premonition is triggered during a roller coaster ride at an amusement park called 'Devil's Flight.' Wendy Christensen, the protagonist, experiences a vivid vision of the roller coaster malfunctioning, leading to a catastrophic accident that results in the deaths of many riders.

After her premonition, Wendy Christensen attempts to prevent the deaths of her friends by warning them about the impending disaster. She urges them to leave the roller coaster before it takes off, which saves several of them. However, she struggles with the knowledge that Death is still pursuing them, leading her to try to find patterns in the order of deaths to save those who are still alive.

Kevin Fischer is Wendy's boyfriend and one of the survivors of the roller coaster accident. He supports Wendy as she grapples with her premonition and the subsequent deaths of their friends. Kevin becomes increasingly concerned about the threat of Death and works with Wendy to figure out how to outsmart it, showcasing his loyalty and determination to protect her.

The photographs taken by Wendy serve as a crucial plot device in Final Destination 3. They capture moments of her friends' lives and later become a means for her to piece together the order of their deaths. Each photo reveals a clue about how Death will claim its victims, and Wendy uses this information to try to save her remaining friends.

Ashlyn Halperin meets her demise in a gruesome accident involving a tanning bed. After surviving the initial roller coaster disaster, she goes to a tanning salon where she is trapped inside a malfunctioning tanning bed. The bed overheats and ultimately causes her to suffer a horrific death, illustrating the film's theme of inescapable fate.

Final Destination 3 is not considered family-friendly due to its intense themes and graphic content. Here are some potentially objectionable or upsetting aspects that may affect children or sensitive viewers:

1. Graphic Death Scenes: The film features elaborate and gruesome death sequences that are central to the plot, showcasing various characters meeting their ends in shocking and violent ways.

2. Themes of Death and Fate: The overarching theme revolves around death and the idea of trying to escape fate, which can be unsettling for younger audiences.

3. Disturbing Imagery: There are scenes that include blood, injuries, and other graphic depictions of harm that may be distressing.

4. Psychological Tension: The film builds a sense of dread and anxiety, as characters grapple with the knowledge of impending doom, which can be emotionally intense.

5. Mature Language and Situations: There are instances of strong language and adult situations that may not be suitable for younger viewers.

Overall, the film's focus on horror and the macabre makes it more appropriate for mature audiences.