All Heavy Lifting / 'Twas the Night Before Liftoff

S1, E23: All Heavy Lifting / 'Twas the Night Before Liftoff

Available on iTunes, Prime Video
All Heavy Lifting: While the kids try to solve the payload problem for Bob's secret craft (with Rupert hindering their efforts), Von Bolt believes he's uncovered proof, in form of a tiny wrapped present, that Bob is Santa Claus.