Ruff chooses his contestants.

The contestants are stranded on a mysterious island; Fetch finds clues about the disappearance of his parents.

Ruff finds out his inheritance and Ruffman Manor is haunted.

Shreya learns how to box and Marc and Marco engineer a safe boxing helmet for Ruff.

When Chet begins replacing everything in the doghouse with cheese, it inspires Ruff to send Emmie on a cheese-themed challenge; Ruff seeks help from a carrier pigeon.

Grandma Ruffman needs a wedding gift and is baking a wedding cake.