Bradley Cooper plays Pat Solitano, a man with bipolar disorder who is released from a psychiatric hospital and moves back in with his parents (Robert De Niro and Jacki Weaver). Determined to win back his estranged wife, Pat meets recently-widowed sex addict Tiffany Maxwell (Jennifer Lawrence). She tells Pat that she will help him get his wife back if he enters a dance competition with her. The two become closer as they train and Pat, his father, and Tiffany examine their relationships with each other as they cope with their disorders.