Twayne and Callie must infiltrate a secret Wizard compound where Leonard is training his apprentice. But their complicated strategy involves building a summer camp on a moment's notice, with Mark Lilly as their head counselor.
Grimes loses it when his favorite TV series ends with a stupid twist. Mark helps him unravel his attachment to the show, uncovering a deep seated memory along the way, while amateur filmmaker Randall documents the whole thing.
Callie decides to makes a clone of Mark so that the DOI Bowling Team will win their tournament. But when Clone Mark finds a cruel message in Callie's secret diary, he decides to get revenge by framing her for murder.
Randall puts Mark's soul up for sale on the Soul Exchange, and finds interested buyers in Callie and Aldermach. Meanwhile, Grimes pursues his dream of creating a pop music act with a new teen sensation.
Twayne throws a company party aboard a cruise ship, where Randall is introduced to a strange plant species. Randall gets sick from its dangerous pollen, and finds that Mark holds the key to his survival.
With Mark working all the time, Randall feels neglected, so he decides that they should spend more time together to decide if they should stay roommates. And Grimes's Mummy returns from the dead, only to find fault with everything Grimes is doing.
Mark becomes conflicted about his relationship with Callie after she gets a promotion by turning herself into a man. He does his best to be understanding, but their love is soon put to the test when they are asked to embark on a dangerous mission to the fabled underwater city of Atlantis.