S5·E8 Clash of the Titanics

Tchang Zu's demon chi is located in the ruins of the Titanic. Jackie, Jade, Tohru, and Uncle, ridden with the flu, journey into the murky depths of the wreck to find it, but Drago has followed them. Things aren't helped when Jackie suffers from being down in the cold water for too long and he loses all grip of his senses...