New boy Eddie arrives and makes an enemy in Patricia. Amber surprises Nina by finding something Nina's been looking for. Eddie causes trouble at Jerome's fundraiser day, and things get worse when Mara figures out it's all a scam.
Nina and Fabian puzzle over the mysterious cube that they found in the tunnels. Nina figures out how to make the mysterious cube into a key to unlock the first door in the tunnels, and soon the Sibunas face their next Task.
The day of the Ball. Amber, Nina and Fabian have had the same dream of the Spirit pushing Nina into the Chasm. The night of the Ball. Amber, Nina and Fabian complete the hopscotch challenge but there's a bigger test to come.
The Sibunas’ next Task is a deadly Egyptian version of hopscotch. If they get the sequences wrong then the ceiling starts to descend. The gang figures out the safe sequence to cross the deadly hopscotch. Then, when Nina hears Senkhara, she follows.
Jerome's dad wants him to visit him in prison. Patricia finds out about Eddie's bet, and Joy and Mara sign up for the school website. The Sibunas practice laying the beam, and Victor finds the lock in the cellar and map of the tunnels, which he copies.
