Giant Monster of the Uninhabited Island

It is the height of summer, and Nobita and his friends are going swimming at the beach. They go swimming on an uninhabited island with Doraemon. Doraemon uses the "Dress-Up Camera" to help Nobita and the others change into their swimsuits, but Nobita can't swim, so he goes to Doraemon for help. Doraemon takes out the "Transformation Ring and Cards," but then throws them away. Doraemon then takes out the "Spartan Coach" to teach Nobita to swim, but Nobita still can't learn. Playful Nobita misuses the "Transformation Ring and Cards," turning his legs into a fish tail. Unexpectedly, the gadget's effect only lasts 15 minutes, and Nobita quickly drowns. Doraemon, upon learning of this, wants to teach Nobita a lesson. He is accidentally frightened by Nobita transforming into a mouse. Nobita transforms into a lion, terrifying Shizuka and the others. He also transforms into a python and an eagle. Nobita secretly takes the "Anywhere Door" and gives Shizuka and the others bananas. Unexpectedly, Nobita turns a lizard into a monster, frightening everyone, including Doraemon.