Separated from the man in the yellow hat while at a Christmas tree farm, Curious George ends up at a hospital where he delights the child patients with his own brand of tree trimming.
Curious George gets into trouble when he boards a dump truck and spills a load of sand in the road but redeems himself when the sand blocks the getaway of jewelry thieves.
While on a field trip to a fire station with Mrs. Gray's class, Curious George goes off on his own and is soon at the scene of a fire, where he finds a way to be helpful.
Visiting a safari-style zoo where resident animals roam freely, George is unable to resist joining them and befriends a sad baby rhino who hides until George plans a special birthday party for her.