The squad heads for the water realm of Salineas, ruled by Princess Mermista, but first they need a ship. Catra sets sail with Force captain Scorpia.

Adora, Catra, Perfuma and Netossa reenter the Fright Zone to rescue Scorpia while Bow and Glimmer head to the library to check on Bow’s dads.

A strike team infiltrates Mystacor, searching for the Heart’s failsafe, the Crystal of Arxia. Entrapta and Swift Wind gather data on the chip network.

The best friend squad heads for the Heart while the princesses attack the spire so Entrapta can disrupt the chip network. Horde Prime makes his move.

Shadow Weaver and Catra attempt to reach Adora. Glimmer faces her father while Bow tries to evade Scorpia long enough to execute Entrapta’s program.

Adora, Micah and the princesses search for a way to fight back and to rescue Glimmer. On Horde Prime’s flagship, Catra schemes.