Top of the World - S1.E8

Kong, Jason, Tann and Lua investigate a temple in the Atlantean ruins of Shama-Ra on Kong Island. Tann and Lua are possessed by the ancient spirits of the Atlantean King and Queen. They take the Primal Stone of Lightening from Kong's Lair and use it in an attempt to destroy their old enemy--Chiros! A massive battle takes place with Jason, Kong, and the Atlanteans fighting against Harpy, Ominous, and an army of Apbats. The minions of Chiros are defeated, but the temple is destroyed. Tann and Lua are released by the King and Queen who rejoin their ancestors.