Struggling to cope after a move to the city with his mother, Elmer runs away in search of Wild Island and a young dragon who waits to be rescued. Elmer’s adventures introduce him to ferocious beasts, a mysterious island and the friendship of a lifetime.
Jacob Tremblay
as Elmer Elevator (voice)
Gaten Matarazzo
as Boris the Dragon (voice)
Golshifteh Farahani
as Dela Elevator (voice)
Dianne Wiest
as Iris the Rhinoceros (voice)
Rita Moreno
as Mrs. McClaren (voice)
Chris O'Dowd
as Kwan the Macaque (voice)
Judy Greer
as Soda the Whale (voice)
Alan Cumming
as Cornelius the Crocodile (voice)
Yara Shahidi
as Callie (voice)
Jackie Earle Haley
as Tamir the Tarsier (voice)
Mary Kay Place
as Narrator (voice)
Leighton Meester
as Sasha (voice)
