Mabel is in charge of the Mystery Shack after making a bet with Stan to see who can the most money in three days, and determine which of them is the better boss.
Dipper wants his own room and when Soos finds one in the shack, Stan makes Dipper and Mabel compete for it. Meanwhile, Dipper has found out that the shag rug inside let's you switch bodies with whomever you shock.
When Mabel Discovers that her favourite boy band is actually a bunch of imprisoned clones, she sets them free, only to decide on keeping them for herself; Dipper is convinced that Robbie plans to brainwash Wendy with a secret message.