Planet Aromoid is home to the Smelloids, alien kids who communicate exclusively through smell. Leo becomes lost in a cavern and must use his sense of smell and the memories to find his way to the surface of the planet.

The Earth Kids land on a mysterious planet called Sketch. It's surface is smooth and white like paper. When the kids discover a random coffee cup full of markers they doodle funny characters on the surface of the planet.

The Earth Kids travel to the Webbers' planet for an alien birthday party. The party is packed with big spider kids dancing and eating feelings!

When messages get crossed and word gets out that 'Alice is hosting a party!', alien kids from all across the supercluster storm her apartment!