Glen and Jane, two well-groomed members of a religious cult called the Movementarians, offer Homer a pamphlet outlining a free get-acquainted weekend at a lakeside resort. Intrigued, Homer drives to the compound. There he is shown an orientation film explaining the church’s belief that a space ship will transport worshipers to another planet from which a higher state of bliss can be achieved. Gradually, Homer falls under the cult’s spell, as do many other Springfield residents.

When Homer returns, he tells his family they are all joining the Movementarians. Marge protests, but she soon realizes Homer gave away the deed to the house. Left with little choice, Marge joins her family as they relocate to the compound. As time passes, Bart and Lisa are slowly brainwashed by the cult. Horrified, Marge escapes and seeks out Reverend Lovejoy, who has lost his entire flock to the Movementarians. With some help from Groundskeeper Willie, Marge and Lovejoy rescue the family and immediate begin deprogramming them.

Marge tricks the children into rejecting the cult’s leader when they are promised make-believe Hoverbikes. Homer, however, proves much more difficult to deprogram. Marge sees a twinkle in her husband’s eye when Flanders mentions beer. Holding a beer mug in front of Homer (as if it were sacrament), Lovejoy slowly pours out a single droplet. Homer sticks out his tongue and catches the falling liquid. At first, the sacrament seems to have no affect. But when the cult’s lawyers drag Homer back to the compound, he suddenly regains his senses and exposes the cult’s leader as a phony. Sect members disperse and head back to Springfield.