When Nya's elemental powers begin to fluctuate wildly, threatening to dissolve her into the endless ocean, the ninja are forced to embark on an aquatic adventure. Venturing deep beneath the sea, they discover the sunken city of Merlopia and face off against a captivating yet deadly foe: Prince Kalmaar and his army of Maaray Guards. Why Seabound Remains a Fan Favorite

To defeat the Overlord, the Ninja achieve their ultimate Dragon Forms , a legendary power prophesied to save Ninjago.

– The series finale that features the Ninja's final stand and a selfless act to save Ninjago.

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