Cassandra taps into her darkest emotions, fueled by anger at Rapunzel, unlocking the Moonstone's potential, affecting the Opal and Black Rocks.

Other teams face their own challenges: Pete wants to impress Catalina, Varian endures Xavier's long stories, Kiera teaches Stan to be devious, Ruddiger's schemes backfire, and Eugene and Lance join the race casually.

After initial mishaps, Cassandra gets an offer to join the royal guard of Ingvarr, but they must win the final competition.

At the last second, Varian tackles his fears and encases the rocks in amber, saving Corona, and people begin to respect him again.

With an implication from Owl, Rapunzel and Eugene board a hot-air balloon and return to Tirapi Island, where the Lorbs dwell, in the hope of finding Cassandra.

Cassandra returns to the Spire to steal the Mind Trap, a device that can control anyone who has sworn loyalty to the Moonstone, from Calliope.

Rapunzel, learning of this, travels to the house, only to encounter Cassandra, who had been told by Zhan Tiri to investigate the rumors.

After having a nightmare about Cassandra at her stronghold, the Captain of the Royal Guard steps down from his position and hands his title over to Eugene.

Eugene, Rapunzel, Maximus and Pascal take off to go look for the thief while Lance is left in charge of watching over Varian's new invention: The Rooster, a large machine that warns of Cassandra's imminent attack.

Varian learns that Lord Demanitus made a machine that trapped Zhan Tiri in another world called "the Lost Realm" for millennia.

Rapunzel, Eugene, Pascal, Varian, Lance, Angry and Red venture to Lord Demanitus' tomb to get the plans.

While the Coronans alongside Adira, Hector and King Edmund battle against Zhan Tiri, Rapunzel and Cassandra make up.

They battle Zhan Tiri and force her to merge the Sundrop and Moonstone gems together at the cost of Rapunzel cutting her brown hair short again.