The poor little fish is trapped here. We need to help the little fish escape the traps and sharks, go through the sewers, and go back to the ocean to be free.

The puzzle effect is very obvious. Basically, all players can play it directly. It's very easy. They have to make a detailed analysis of the mechanism before each pass,With the gradual unlocking of the checkpoint, the fish are trapped deeper and deeper. Only by mastering more skills can the fish be easily rescued.