Fred brings the gang to the local garbage dump to find a rare part for the Mystery Machine, inadvertently resulting in Scooby running into his old kennel mate Axel. After Axel acts very coldly to Scooby, he and Shaggy become determined to solve the mystery of the Trash Monster, which Axel is also trying to capture. Meanwhile, Daphne tries to become exactly like Fred to find out how he feels as the leader of the gang.
