While Trek waits for his loose tooth to fall out, he finds a baby dinosaur tooth in the house and decides to figure out which baby dino it belongs to so that it can get a visit from the Dino Tooth Fairy!

Trek teaches a baby Plesiosaur how to swim across the pool and back to its Mom; Penelope gets stage fright before the school talent show.

While on a sightseeing tour of Niagara Falls with his Grandma, Trek finds a seemingly lost baby Spinosaurus.--- Before Grandma heads south for the winter, she and Trek create a comic book about three pterosaur babies.