Toka Town:Shop is a new role-playing game in the world of Toka Town, a city in the sea. The main character is a young boy named Toka. He lives in a small town with his parents and his little sister, Hana. One day, he finds a mysterious letter from his grandfather, who is now missing.

The letter says that his grandfather has gone to the treasure island, and he is going to join him. He also receives a strange message from his sister Hana. She says that she is going to the same place as him.

Toka and Hana decide to go to the island together. They will stay there and explore the island. They will find the treasure and help their grandfather. They will also play mini-games, find new characters and meet new friends.