In 2046 AD, the Yalta civilization was unprecedentedly prosperous. The ambitions of the Yalta Central Military Bureau expanded and targeted the earth. Therefore, a special forces captain named Yabu was sent to the earth with Yalta's supernatural energy. He needed to perform a mission, which was to destroy the earth. But after he came here, he met the mysterious girl Sara, and met many people. He thought he was a killing machine, but he didn't expect that he could also have friendship and love, and work hard to find the truth hidden by Yalta.