After an expedition led by Misako, Master Wu and Clutch Powers goes missing while exploring an uncharted island, the ninjas try to pick up their trail.

Having survived their journey to the island, the ninjas venture inland where they unexpectedly befriend a dragon and are ambushed by living statues.

The ninjas find themselves captured by the Keepers of the Amulet, who seem to be treating Jay particularly well; Lloyd tries to stage a rescue.

As Jay is sacrificed to the sea serpent that terrorizes the island, the other ninjas begin to suspect events on the isle are not all as they seem.

When Nya loses control of her elemental powers, the ninja search for answers.

Nya's mother, Maya, arrives with advice on how to regain control of Nya's power; Zane and Pixal discover something else might be behind the disturbances.