Two teams fight it out to dodge detention, and put the cool back into school, in a mischievous mix of tongue-in-cheek comedy, off-the-wall questions, nonsensical studio games and slapstick challenges.
After elementary schooler Keita Amano (Nate Adams) frees a Yo-kai butler named Whisper, he is granted a special watch that allows him to see the Yo-kai causing trouble all around him.
It is the year 2030, and the stage is the capital of Japan, Chou-Tokyo. Through "Buddyfight", humans have started cultural interactions with residents from other worlds called "Affinity Dimensions". Buddyfight is a game with selected humans as the "Buddyfighter", and residents from the other world as the partner (known as "Buddy Monster"). These battles have high significance and sometimes it is even used to decide the fate of a nation, and naturally there are those who seek to use the Buddy Monsters for evil purposes.