Jessy and Nessy go to Knock and Block's house to play bubbles, because it's raining outside. But their house is too small for everyone to play in together! They have to build a bigger Playhouse.

It's Halloween, but Jessy and Nessy are distracted from their trick or treating by a very stinky mist. Unless they can figure out where this stink is coming from, it's going to ruin Halloween!

Jessy and her pals are trying to paint a picture for Nessy's room, and are looking for a yellow crayon. Their search reveals that all the colors in Cara Park are switching around. What is going on? And why?