When the Primm family (Constance Wu, Scoot McNairy) moves to New York City, their young son Josh (Winslow Fegley) struggles to adapt to his new school and new friends. All of that changes when he discovers Lyle — a singing crocodile (voiced by Shawn Mendes) who loves baths, caviar and great music — living in the attic of his new home.

The two quickly become friends, but when Lyle's existence is threatened by evil neighbor Mr. Grumps (Brett Gelman), the Primms must band together with Lyle's charismatic owner, Hector P. Valenti (Javier Bardem), to show the world that family can come from the most unexpected places and there's nothing wrong with a big singing crocodile with an even bigger personality.

Based on the best-selling book series by Bernard Waber.