From the back cover:
The wizard Fez has faith in the abilities of adventurers. But Mephistopheles isn't as confident. So a pact was made between the wizard and the demon. As each bargained madly to outdo the other's bet, Fez was trapped in a magical sleep. More than just a wizard's pact is at stake as you strive to accomplish the seven "impossible" tasks.
FEZ II is a module which will challenge your ability to overcome dangers, solve problems, and adjust quickly to the unexpected. It was the wizard Fez that made the deal with the demon, but it is you who must make good on...
FEZII: THE CONTRACT