Museum Station's latest addition is Nico's new dinosaur exhibit, and Mechanic Milo needs to pick up a giant T-rex bone before the grand opening.

Build-It Brock must use his skills to fix a fiasco when a bridge breaks while Peoplemover Penny is shuttling kids to a school show-and-tell day.

Flicker finally gets a mega mission for himself. But will the jumbo-sized balloons he needs to deliver be too big of a task for the tiny train?