Keanu Reeves and Alex Winter return to star as Theodore \'Ted\' Logan and William \'Bill\' S. Preston, Esq. in this sci-fi comedy sequel. 25 years after rocking the world with their Wyld Stallyns concert, Bill and Ted are again called upon to save the universe after a visitor from the future warns them that they need to write a new song to unite the world. With no fresh ideas, the middle-aged pair get back in the time-travelling phone booth and venture into the future to obtain the song they need from their future selves. Meanwhile, their daughters Billie and Thea travel back in time to recruit a group of musical legends from throughout history.