Otto loves to do everything BIG. He builds a space station, but it's not big enough. "More rockets!" he says. "More towers!" Then one day, Otto goes to a birthday costume party wearing a huge costume. Otto's costume is so big that he can't take part in the games and activities! Will he finally learn that sometimes, more can be too much?

Mack Rhino, a private detective, is on the case when a big race is in town and all the runners are missing the laces to their sneakers.