Thirty years ago, Ray witnessed his parents being killed by a strange octopus-like monster. Later, in order to get revenge, Ray joined an ocean expedition led by the archaeologist Nicole. The main purpose of this expedition is to find a legendary Greek gem, which happens to be guarded by an octopus-like monster. Ray hopes to meet the monster again and kill his enemy. However, when he really saw the monster, he found it very difficult to kill the other person, and he might even lose his life in vain. ...

2.30 years ago, Ray Raiter witnessed his parents being killed by the giant squid while fighting with it. Now, this giant squid reappears and attacks an expedition looking for Troy's treasure. Ray Raiter joined the team, hoping to meet the monster again and finish it by himself.