Adam Devine is back! The main protagonists are a species of fluffy animals called "Flummels". Two flummels are transported to the present day. Their species has become extinct in these times. They must travel back in time to try to save their species.The great cast includes: Adam Devine as Ed (voice), Rachel Bloom as Op (voice), Ken Jeong as Clarance (voice), Zazie Beetz as Dottie (voice), Jim Jefferies as Burnie (voice), Catherine O'Hara as Alma (voice), Reggie Watts as Hoss (voice), Alex Borstein as Mali (voice), Julia Chan as Mrs Sun / Little Girl (voice), Steve Aoki as Vinny (voice), Maria Bamford as Bo's Mom (voice), Jason Hightower as Narrator / sled dogs (voice), Sydney Malmberg Liu as Bo (voice), David Silverman as Cyclops / Donut store clerk (voice) and Raymond S. Persi as That Guy / Booby (voice).