The Friends are Big Dolphins?

Suneo invite his friends in his house to showing them he is making friends with a dolphin. this made them all bored of hearing his story. Nobita also wants to be friends with dolphins, then Doraemon invites Nobita to go to the sea, before that, her mother asking him to do homework first.

Doraemon use "Water Repellent Rope" and "Anywhere door" go to ocean with Nobita. Then Doraemon use "Obtained bag" to get Nobita's desk with her backpack so he can study in here while enjoying the underwater view.

While Nobita was doing his homework, he met an Orca. Nobita thinks he is a dolphin. Then the two of them played together and Nobita had become his best friend. Nobita gave the name Kuro (黒) because his color is black.

Nobita invite all his friends to meet his new friend. They was surprised because Nobita become friends with an Orca, the king of the seas. Nobita assured them that their friend, who was thought to be a dolphin, was not as dangerous as they thought. Nobita asks Kuro to play with them, Suneo hate to admit it and he wanted to go home.

They began to befriend with the orca, Shizuka-chan want to ride on his shoulders. Then Doraemon give everyone a "Nose Tube" so they can breathe underwater. After that, Doraemon use "Dress-up Camera" to change everyone clothes into the Swimming Suit. Then they all ride the orca together happily.

When Nobita leap together with Kuro, his pants accidentally came off into Shizuka-chan. This made her blushed and the boys laugh at Nobita.

Then Doraemon lights up the "Underwater Campfire" so the gang can make seafood barbecue together, Suneo go somewhere for a while, Kuro suddenly felt that Suneo was in danger, Suneo thought he wanted to be eaten, actually Kuro save Suneo from the shark, Suneo thanks him for saving him from danger.

In the evening, The gang saw a pod of orca whales. he said goodbye and thank you for being his best friend, they all returned home. This episode end when Nobita forget to bring back his study table at the sea.