With Mystery Inc no longer together, the towns of both Crystal Cove and Coolsville were left to deal with the monsters terrorising them.

For years this went on until one day it was announced that a new group would be formed. Shaggy Rogers one of the original members of Mystery Inc starts his mission to find the new faces for a revamped Mystery Inc.

This mission would lead Shaggy to Riverdale where the new members lived. But would they take on the responsibility?