Once upon a time, there was a beautiful planet called Yootopia where YooHoo & friends, Pammee, Chewoo, Lemmee & Roodee, live together taking care of "Tree of Life". However, all Green seeds fly away from Tree of Life by an unexpected accident, and darkness falls in Yootopia. To save Yootopia, YooHoo & friends starts hitting the road to Earth to get Green seeds back to Tree.
