When an "accident" in the Sanctum Sanctorum creates a "Shadow Jeff" intent on causing trouble, Jeff scrambles to undo his mistake. But when the Shadow escapes into the floor, Jeff must follow if he intends to return the Shadow to where it belongs. It’s a grand tour of the Marvel Universe as the lovable land shark chases his shadow from The Savage Land to Madripoor, making new friends and enemies along the way. It will take everything Jeff's got to solve this problem and... reclaim his good name.