The Raimon team has been invited by Fifth Sector strangely to a soccer camp. When they agree, things go out of hand since it was revealed that Fifth Sector wants to eliminate them once and for all in the island called God Eden. Now, the Raimon team needs to train harder, to be able to show that they have the strength to fight back and prove Fifth Sector's doings wrong.

When Keita frees Whisper, a ghost-like yōkai, from 190 years of imprisonment, Whisper pledges to protect Keita from supernatural dangers. Whisper also gives Keita a watch that allows Keita to see other yōkai. Together with the twin-tailed cat spirit Jibanyan, they encounter lots of yōkai-related problems and solve them.

Adapted from the video game series of the same name, NiNoKuni follows high school peers Yuu and Haru who must travel between two separate yet parallel worlds to help save their childhood friend, Kotona, whose life is in danger. In this magical quest complicated by love, the three teens will be tasked with making the ultimate choice.