Nina and Fabian puzzle over the mysterious cube that they have found in the tunnels, but it falls into the wrong hands. Soon, Jasper steals it for the Collector, his apparent patron. Nina figures out how to make the mysterious cube into a key to unlock the first door in the tunnels, and, soon, Sibuna faces their next task. A deadly endeavor that involves potentially fatal traps.

Sibuna's next task is a deadly Egyptian version of hopscotch. If the sequence is not correct on the first try, the ceiling descends to crush everything in its path and keep the mask hidden from the world until the end of time. Meanwhile, Jerome is desperate to clear his debt after his charity scam fails. He starts selling masks and dresses for the dance. Unfortunately, he, setting himself up to be ostracized, sells Nina, Joy, and Mrs. Andrews the same dress. Sibuna figures out the correct sequence to safely cross the deadly hopscotch. In a dream at the end, during the dance, Fabian and Nina share a kiss. Then, when Nina hears Senkhara calling, she follows, but she can be walking into a trap. The episode ends with the dream.

This is the day of the ball. Amber, Nina, and Fabian had the same dream involving Senkhara pushing Nina into the chasm the night before. Vera and Trudy have a bake-off during the ball. Mrs. Andrews finds a receipt near Vera's cake and suspects she may have bought it. Also, down in the tunnels, Amber, Nina and Fabian attempt the deadly hopscotch challenge on the night of the ball. The three complete the hopscotch challenge, but there is a bigger test to come. Eddie gets Patricia into trouble over the music and then saves the day. Nina and Fabian are alarmed to see that their dream from the night before is coming true.