The “bizarre, serial murder case” that caused quite a disturbance was solved and peace returned to Inaba. But that only lasted for so long. During the Golden Week after the Protagonist and the others entered their third year of high school, a new rumor begins spreading in town.
The rumor speaks of a mysterious program that comes on if you look into a turned off TV on a rainy night. The name of that program is the “P-1 Grand Prix”. It’s a fighting program where high school friends fight against each other to the bitter end. When the protagonist and the others watch the program, they see Teddie on screen declaring the beginning of the show.
“May the manliest of all men come on down!”
And with that, the participating challengers are introduced. But what appeared were their selves with botched up catch phrases. Could this program be a mischievous prank by Teddie?! Around when the program began though, the protagonist’s friends go missing on after another. On top of that, they cannot get in contact with Teddie who was on TV. The members of the “INvestigation Team” realized this is an abnormal situation and they dive into the TV once again to solve the case.
What could this mysterious program be…?