In Dear Brother Your Regret Came Too Late, Stephanie Sims has spent 16 years being blamed by her family for her mother's death. Her mother died while giving birth to her, and her grieving father has held Stephanie responsible ever since. Instead of receiving the love and care she deserves, Stephanie grows up neglected and unwanted in her own home, carrying the burden of a tragedy she could never have prevented.

The only person who initially shows Stephanie warmth and kindness is her older brother, Alexander "Alex" Sims. Whenever their father ignores her, Alex comforts Stephanie and reassures her that she is loved. However, everything changes when their cousin, Abigail Dawn, moves in. Soon, even Alex begins siding with their father and showering Abigail, whom they call Abby, with affection. Stephanie is pushed further aside, and her family cruelly wishes that she had died instead.

Tragically, their wish seems to come true when Stephanie is diagnosed with cancer. Alex even catches a glimpse of her diagnosis report, yet he fails to understand the suffering she has endured. After Stephanie's death, his accusations against her and her friends begin to turn against him. As the truth comes to light, Alex is forced to confront the devastating consequences of his actions. But by then, his regret has come far too late. Can a family ever make up for the love and kindness they refused to give?

Characters

Stephanie Sims
Stephanie is the suffering female lead and Alexander Sims' younger sister. Blamed for her mother's death, she endures years of neglect and mistreatment while silently struggling with her illness.

Alexander "Alex" Sims
Alexander is Stephanie's older brother and one of the main characters. Although he once cared for her, he begins siding with Abigail after she joins the family. His misunderstanding of Stephanie ultimately leads to devastating regret.

Abigail "Abby" Dawn
Abigail is the manipulative and jealous main antagonist. Despite failing three classes, she manages to enter the Ivy League by exploiting Alex's support and influence.

Rowan
Rowan is Stephanie's punk-styled best friend and one of her strongest supporters. She is also the girl who gives Stephanie her tattoo and remains by her side during difficult times.

Episode 3 - Dear Brother, Your Regret Came Too Late Full Movie

Plot of Episode 3