The Nektons are trying to identify a unique life form. They've never seen it- they've only heard its sound: "Bloop". Just as Ant discovers its true nature, a huge underwater mining machine threatens to destroy it!

While fighting over Viking treasure, the Nektons take over the Dark Orca. But the pirates in turn take over the Aronnax. Neither side is happy about strangers in their homes! But neither side is willing to back down.