Join Hip Hop Harry and the kids in singing “Wash Up, Wash Down”! Learn about hygiene as you follow the words on screen and sing with the whole crew of Hip Hop Central!

Andy and his son Opie are left alone for the weekend without their Aunt Bee. They now have a responsibility to clean up their messes before she gets home. Andy teaches his son how to properly do dishes.

Tip discovers an alien while she is looking for supplies in a store. The alien's species took all the humans away, and thus, Tip traps him in a freezer. The alien tries to negotiate to get Tip to let him out. Tip notices that he is lying and also lies to him in order to mislead him.

When the Mammoths are faced by the smell of the Neanderthals, they host a meeting where they discuss intervention. They decide that the humans must take after the animals and learn how to bathe themselves.

The CyberSquad tests if its contraption serves as a raft. While it floats, it contains holes, and Digit gets attacked by piranhas through the holes. The group determines it needs to build a raft with no holes and no overlap. Together, they combine square pieces that they find on the floor to make a big raft. Inez explains that they've created a tessellation, and she defines the meaning of the word.