A first-rate assassin by the name Shirazaki Kage was sent on a job to protect a highly classified device that could be used as a time machine. Being unable to stop the intruders in time Kage and the intruders get warped to the year 2085, where Tokyo has turned into a futuristic metropolitan city. To continue his mission he tries to track down the intruders and restore time but finds it difficult to operate in the current time period he is in.