Billy finds four dogs that he likes, but he can only pick one, so Grim makes a dog by merging all four dogs. When Billy makes the dog sleep outside, the dog gets angry and decides to take everyone's beds, using Grim's trunk. Mandy already has a plan (she knew this would happen anyways).
Scythe for Sale:
When Billy holds a yard sale to get Sea Critters, he accidentally sells Grim's scythe to Irwin along with golf clubs. Irwin uses the scythe to make Mandy finally fall in love with him and also create chaos on the city of Endsville.