Decades ago, a being known as the Giant of Light joined together with Shin Hayata of the Science Special Search Party to save Earth from an invasion of terrifying monsters called Kaiju. Now, many years later, those dark days are fading into memory, and the world is at peace. But in the shadows a new threat is growing, a danger that can only be faced by a new kind of hero--a new kind of Ultraman...

Pop idol Rena Sayama takes center stage as her concert kicks off, but the alien Adad arrives and announces his intent to kill her along with everyone in the audience! Shinjiro and Moroboshi aren't about to let that happen, and the crowd is stunned at the appearance of not one but two figures in Ultraman suits. Then Bemular drops in...