Hooves of fire: Robbie is Rudolph's son, and Pop is keen to see his lovable, but lazy, progeny follow in his famous hoof prints. Robbie has to get in shape for the Reindeer Games, where he'll have the chance to show Santa whether he has the right stuff or not. Legend of the lost tribe: A group of reindeer have set up a tourist business offering guided tours. When an accident occurs, Robbie believes he was saved by a long lost tribe of Vikings.