Kat Valdez is half of the sexiest celebrity power couple on Earth with hot new music supernova Bastian. As Kat and Bastian's inescapable hit single, "Marry Me," climbs the charts, they are about to be wed before an audience of their fans in a ceremony that will stream across multiple platforms. Divorced high-school math teacher Charlie Gilbert has been dragged to the concert by his daughter Lou and his best friend Parker Debbs. When Kat learns, seconds before the ceremony, that Bastian has cheated on her with her assistant, her life turns left as she has a meltdown on stage, questioning love, truth, and loyalty. As her gossamer world falls away, she locks eyes with a stranger-a face in the crowd. If what you know lets you down, then perhaps what you don't know is the answer, and so, in a moment of inspired insanity, Kat chooses to marry Charlie. What begins as an impulsive reaction evolves into an unexpected romance. But as forces conspire to separate them, the universal question.