When Nancy and her friends vacation in a California beach house, they discover someone is dumping trash on the beach, and Nancy suspects both reality show sisters the Casabians and a suspicious owner of a spa.

The animal citizens of Beaston discover better ways to recycle and control their trash.

"When Kenzie slips on her mermaid tail, she becomes Mermaid Kenzie, protector of the deeps. One day as Kenzie snorkels around a shipwreck, she discovers more plastic bags than fish. Grabbing her spear and mermaid net, she begins to clean up the water and the shore--inspiring other kids to help"--

"Manny and his friend Gertie join forces to clean up their local park--because every superhero needs a planet worth saving"--

Hubie transforms into Earthman, defender of the environment, to battle Trashman's army of litterbugs.