Sasanami Unmei transfers to Nagumohara Junior High School in Nagasaki in search of a soccer-free environment, wishing that soccer would disappear. Meanwhile, Endou Haru, who has demonstrated his natural talent and reigns at the top of his generation, also has complicated feelings about soccer. The unexpected encounter between these two opens the door to new heroes.
Yuuichi Katagiri believes that friends are more important than money, but he also knows the hardships of not having enough funds. He works hard to save up in order to go on the high school trip, because he has promised his four best friends that they will all go together. However, after the class' money is all collected, it's stolen! Suspicion falls on two of Yuuichi's friends, Shiho Sawaragi and Makoto Shibe.
Soon afterwards, the five of them are kidnapped, and wake up in a strange room with a character from a short-lived anime. Apparently, one of them has entered them into a "friendship game" in order to take care of their massive debt. But who was it, and why did they have such a debt? Could they have stolen the money from class to pay for entry into the game? Yuuichi and his best friends will have to succeed in psychological games that will test or destroy their faith in one another.
Nervous to meet her new stepdad, Hiyori heads to the place she always feels at home—the ocean. When a curious girl named Koharu shows up, Hiyori decides to teach her how to fish, just like her father did before he died. But after Koharu reveals she’s also meeting her new family that night, the girls come to a startling realization. Their friendship is about to reach a whole new level!