A mackerel from the sea tries to escape from a restaurant! Padak is a sea mackerel who is caught in a net and thrown into a restaurant tank. An old flatfish is the only one that has survived for a very long time. He earns the trust of the other fish through his survival skills. Thanks to Padak, who attempts to return to the ocean, the peace in the tank is broken and conflicts with the old flatfish grow larger and larger.