Maggie is in her bathroom preparing to swallow a handful of pills, but she is interrupted by a phone call from a hospital, informing her that her twin brother Milo—whom she hasn't seen in 10 years—has attempted suicide. Maggie visits Milo in the hospital in
Los Angeles and suggests that he come to stay with her in their childhood hometown of
Nyack, New York. He agrees and meets Maggie's husband Lance. Milo is surprised when Lance tells him that he and Maggie are trying to have a baby, as Maggie never expressed a desire for children. Maggie later confesses to Milo that she's been taking contraceptive pills, both to avoid having a child with Lance and because she had been having sex with her scuba instructor Billy. She worries that she is not worthy of Lance, but Milo reassures her. Milo reconnects with his high school English teacher Rich, with whom he had a sexual relationship when he was 15. Rich now has a sixteen-year-old son and is dating a woman. Milo and Rich spend the night together. Later, Milo appears at Rich's house while his son is there. This infuriates Rich, who does not want his past exposed. Maggie is also upset with Milo for resuming contact with Rich, as she exposed the relationship to end it as well as Rich's teaching career. Milo tells Maggie about a boy that had once bullied him, a boy who their father had assured him would reach his peak in high school and have a miserable adult life. But it turns out that the bully has a successful happy life, and it is Milo who had peaked in high school. Maggie asks for reassurance that he will not kill himself, and he promises to try not to. Lance confides to Milo that he is concerned that he may be infertile. Milo mentions that Maggie used to hide cigarettes around the house, leading Lance to find the contraceptives. Maggie ends the relationship with Billy and returns home where she is confronted by Lance, who is painfully confused by the birth control pills he has found. She admits to her affairs, then confronts Milo, blaming him for ruining her marriage. Milo retorts that it was no "marriage", and she lashes back suggesting that next time he tries suicide he should do it right. Maggie leaves Milo a voicemail echoing his suicide note and goes to the pool where she had been taking scuba lessons. Tying weights to her body, she jumps into the pool. As she begins to drown, she panics but is unable to free herself. Milo, having heard her message, jumps into the pool and rescues her. The film closes with the twins at Maggie's house, looking at their new fish tank filled with goldfish. ==Cast==