When Trek accidentally throws Doug's favorite ball on to the roof, he tries to get a Dromaeosaurus to knock it down; Trek learns that the Therizinosaurus used its claws for defense, stripping leaves off trees and for digging up roots.

It's Friendship Day and Trek discovers an Amargasaurus showing off for another Amargasaurus. Trek wants to figure out what they're doing. With the help of his friends, Trek figures out that the boy dino is trying to impress a girl dino. While Liam babysits Trek, Trek has to do some dino-sitting of his own when a baby Albertosaurus, baby Brachiosaurus and a baby Spinosaurus find their way inside. It's up to Trek to get them out of his house before they turn it into a huge mess!