Johnny is a successful banker living in San Francisco with his fiancée, Lisa. Despite their seemingly stable relationship, Lisa grows dissatisfied and decides she’s no longer in love with Johnny. She confides in her mother, Claudette, who insists she should stay with Johnny because of his financial stability. Meanwhile, Johnny’s best friend, Mark, becomes unwittingly entangled in the affair as he begins a romantic relationship with Lisa behind Johnny’s back. Johnny remains unaware of the betrayal and expresses his genuine belief that Lisa completes his life.

As several side interactions unfold, Johnny’s world gradually begins to unravel. A key subplot involves Denny, a young man whom Johnny supports financially and emotionally as a father figure. Denny gets into trouble with local criminal Chris-R over a debt, which Johnny helps resolve. Johnny starts to suspect Lisa’s infidelity after overhearing a conversation between her and her mother but struggles to come to terms with it. Other friends and acquaintances, including Michelle and Mike, weave in and out of Johnny’s life, each experiencing their own relationship challenges. As tensions rise, Johnny sets a plan to confirm his suspicions about Lisa’s unfaithfulness, further deteriorating the fragile bonds among the characters and threatening the crumbling relationships they’ve tried to maintain.