Henry and the other kids destroy Ray's prized movie prop, The Theranos Boot. To replace it, Henry and Jasper travel to an alternate universe Man Cave using Bill Evil's inter-dimensional transporter and steal their Theranos Boot before Ray finds out.

Henry and the gang set up a secret underground restaurant in the Man Cave for Charlotte's private dinner with music superstar Jack Swagger. When word gets out that Jack Swagger is in town, some unwanted guests crash the party.