Brett finds himself treasure hunting solo while simultaneously attempting to get the gang back together. When it is ‘obstacle course day’ in gym class, the core four are forced to work together and learn that a strong foundation is the key to any obstacle. The four realize Kelly has been missing from school and need to find her to continue on their mission.

A bright star leads these wise boys and girls to a dusty antique store in search of the next clue. They quickly meet the eerie shopkeeper, Gregor, and must decide if they should let him in on their treasure hunt. He gives them a history lesson outside of school but expects something in return. As pressure rises, flames are stoked, and Kelly’s secret is exposed.

Confronted by Bruno Black, who reveals he also searched for the secret lab back in 1984 and failed, tries to force the kids out only for them to actually find the lab and to find themselves trapped inside.

Trapped, running out of time, and no cell reception, the gang needs to confront their fears and draw from their past in order to escape the underground tomb.

The last clue leads our party of five to a silent snowy graveyard where they discover a tomb with what they are looking for. Our mysterious red cloak villain is revealed, and Kelly must face her past to move ahead.

Our core four endure public humiliation performing the worst play of all time, The Legendary Life of Ignatius Cockshutt, for their classmates and family. While in between performances, the gang gains a new perspective on history and decides to put a new spin on an old story.

The team tries to decipher their first clue in the detention room but are interrupted by local historian Miss Dumont, who stops by to take back what she believes belongs to the Historical Society. As punishment, the new fab five are assigned to perform in a historical reenactment of ‘The Legendary Life of Ignatius Cockshutt’. Not only will the play count for 80% of their midterm history grade, but just being in it will destroy any chance they have of ever being popular.

Raign, Brett, and Joy set off elaborate pranks to earn a stay in detention which is located in the old library which is also the suspected entry point to Alexander Graham Bell's secret lab. Norman also enters the room and even finds the solution to the first clue which leads to the tunnel entrance.

Out of red paint sends Miss Marner to a great prank and onto detention for the team. In the dark and spooky room the next clue and puzzle is revealed. At the end of detention Principal Lounsberry takes the book of clues to lock it in his safe.

Trapped in Bell's secret lab the kids work on getting out while above them Principal Lounsberry and their parents search for them. After a rescue, the school is placed on the Historical Treasures list and can never be torn down. It almost seems it's all over, except for the treasure map Brett just happened to find in the lab but that's another story.

Having been suspended they now break into school, but the back door is unlocked and the lights are on. They find Bruno Black dancing in the hall. As they decend into the tunnel a noise attracts Bruno into the detention room where he finds the open tunnel hatch.

After an epic prank rocks Alexander Graham Bell Middle School, Raign, Brett, Joy & Hulk end up in detention. Only this time, it wasn’t them! The true prankster reveals themselves and wants to join them on their quest to find Ignatius Cockshutt’s long lost fortune. The group is reluctant until they discover she holds the clue that they have been looking for.