With Underdog Comics more successful than ever, the gang must put aside their duties at the shop to stop an out-of-control monorail. Meanwhile, William Medina's long-term plans are beginning to take shape.
Mindy investigates the monorail robbery with help from an old friend, the Underdogs decide to take up Leo Dobbs on his offer, Max Carmichael tries to find his place in the world, and Lorelei's trial comes to a close.
Charlie meets with Nathan Gershwin to learn more about William's plan and gets more than she bargained for; Lorelei discovers a weakness in supermax security and plans an escape with the Overachievers.
The Underdogs, the Swift sisters, and the Overachievers all converge on McKinney City Comic Con as Billy, Nathan, and David all prepare for a panel that will reveal their project to the world.