Musashi (Sho Sakurai) works hard to expose the lies of Tendo (Asuka Kurosawa), the president of Kanagawa New Airport, and accidentally discovers the Hyakushu Incident, a murder case that occurred due to the construction of the airport five years ago.There must be Tendo's lies“ hidden in that incident... Musashi investigated the Hyakushu Shrine where the incident occurred and found animal footprints in the main hall of the shrine, but then the priest tried to kill him and he was in a desperate situation...!

At the same time, Yuko (Aimi Higa) and the mysterious man (Jesse), who were detained by Ayabe (Kengo Yoshida), were unable to move and were at a loss...!”Where is the data?“Ayabe tried to find something in the mysterious man's bag.

At the same time, Honjo (Nozomi Takuchi) discovered an important video in the surveillance video inside Hyakushu Shrine...!After analyzing the video, Sakura (Sony) and her friends witnessed a shocking scene!

Tendou's sins are revealed, and the true face of the beast...!Why do they have to turn into beasts??The fierce past...the vows made on the eve of the formation...the beast's ”true purpose“ is revealed!!

The following contains spoilers.

Musashi exposes Tendo's sins.Five years ago, Tendo ordered Kawagoe (Jin Katagiri) to kill Hamamatsu Isao who opposed the construction of the airport.The true identities of Sheep and Rabbit are Uta and Kanade, a girl from Hamamatsu.However, Ryu reveals that there is a mastermind behind ”Tendou Mika.“ The real purpose of the beast is to reveal the true identity of the mastermind ”Wildcat“... Moreover, Wildcat” is in the airport now... So who is it??Musashi questions Tendou!At the same time, a mysterious man finally revealed his true identity in front of Yuko...“I am a beast.”