Yuuta Hibiki wakes up in the room of Rikka Takarada and notices two things: he has no memories, and he can hear a mysterious voice calling his name from a nearby room. On further inspection, he finds a robot—which introduces itself as Hyper Agent Gridman—behind the screen of an old computer. Much to Yuuta's surprise, Rikka cannot hear Gridman, nor can she see the ominous monsters looming over a thick fog as it envelopes the town outside. Another giant monster materializes in the city and proceeds to wreak havoc. Amidst the confusion, Yuuta is once again drawn to the old computer and merges with Gridman. Suddenly, he appears in the middle of the battle and is forced to fight the monster. Together with Rikka and fellow classmate Shou Utsumi, Yuuta forms the "Gridman Alliance" to defeat the monsters plaguing the city and find whoever is responsible for their emergence. --- VIDEO - Video Source: BD-J - Video Codec: H.265/HEVC (10bit) - Video Resolution: 1920x1080p HD (16:9) - Video FPS: 23.976 AUDIO - Codec: Dolby Digital - Track 1: English: 5.1 Surround (AC3 640Kbps) - Track 2: Japanese: 5.1 Surround (AC3 640Kbps) - Track 3: Japanese: Dolby Surround (AC3 256Kbps) SUBTITLES - Track 1: English Signs & Songs (Official Subs: Funimation) - Track 2: English Subtitles (Official Subs: Funimation) EXTRAS - Behind the Gridman Alliance - Opening Long Version - Clean Opening - Clean Ending