An oceanographic expedition team was investigating in the deep sea when it suddenly encountered seafloor eruptions and underwater waterfalls, and was stuck at a depth of 4,000 meters. At this time, the rescue team sent a team to find them, and the rescue team encountered the same problem, but fortunately they were prepared and found the distress detector after some effort. But on the return journey, they were attacked by a giant octopus under the sea, and the probe in distress also faced the dilemma of running out of oxygen and power batteries. In the end, the personnel in the two probes encouraged each other and solved all the difficulties together...
