Naro captures the Venus Probe with Jake and Sean. Ace is beamed back to Skyvault by Crystal on Jake's request. Sean O'Connor joins forces with Naro. Meanwhile, Max with Mei Lee and Jason escape from their confinement and look for a transmitter, but are stopped by Diana's troops. Ace is on Sealab that uses its new force field to descend to Atlantis' depth. Jake escapes and beams outside Sealab, where he tries to get on board. Max, the two from Sealab take Diana with them as they escape and uncover Naro's plans. Sean uses the Venus Probe to return to Sealab, where it is soon boarded by Naro. There Sean meets Ace and confesses he is still on his side. The Centurions and Diana have to fight Naro together.
—Lara Cain