In The Rescue of Mermaids, you play as Garry, a human-looking creature who possesses a curse that turns him into octopus, to keep himself in human form he needs to be aroused, and for that he has a small harem with 3 mermaids who are his companions of adventures and love.

One day Garry was relaxing when a horrifying creature appeared and captured all the mermaids at once, leaving Garry alone. Now he must seek and release his companions if he wishes to freely enjoy the human form again.

Garry (the player): The cursed octopus that you embody