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.

While Penelope and her Mom bird watch, Trek tries to figure out whether the Giganotosaurus, the Microraptor or the Troodon was the better hunter.

When Mom takes Trek and Penelope to Marineland, Trek gets so excited he imagines what it would be like if there was a show with prehistoric marine reptiles!