When Po and his friends scale a volcano to confront a mad scientist, Master Mastodon warns them they're treading on dangerous ground.

Blade learns about her brother's past from an unexpected source. Later, the Tianshang weapons fall into the wrong hands.

As the Dragon Knights prepare to battle for control of Tikal, Blade sets out to avenge her brother. Mastodon and Po connect over the Storm Powers.

With their forces combined, the Dragon Knights head into a final showdown for the Tianshang weapons to save the city — and themselves. Skadoosh!