Brennan Huff and Dale Doback could not be more different. Brennan is a lazy, apathetic slacker who relies on his mother, while Dale is a wealthy, athletic narcissist who is emotionally distant from his father. When their parents get married, their worlds are turned upside-down. They become jealous, competitive stepbrothers who use their parents' relationship as a way to compete and undermine each other's success. As the boys' ruthless competition strains their parents' marriage, they must confront their own flaws and figure out how to come together as a family.