Velma's uncle, a famous archeologist, asks the gang to visit his dig
site in Mexico. It seems something is scaring his workers, and he needs
to get to the bottom of it. But when Scooby-Doo and the gang arrives,
the dig is empty and Velma's uncle is missing! Where did he go and
what's scaring everyone? To solve the mystery, readers choose which
characters to follow, discovering what seems to be Aztec ghosts and
monsters along the way.