When the crew of seaQuest are tricked into torpedoing a refugee ship containing Westphalen's daughter, Dr. Westphalen, Ford, and Shan are trapped trying to save her.

A brand new power plant which is set to supply energy to the whole world goes wrong and there is a danger of the polar ice caps melting.

Bridger decides he must sacrifice the seaQuest in order to save the world. Meanwhile, Lucas has a reunion of sorts with his father.