EVE: The Lost One is a sequel to Eve burst error. The events of the game take place three years after those of the first game. The player is able to control two characters - the female detective Kyoko and the mysterious Snake, as they try to solve a complex mystery full of betrayals and political intrigues. In order to complete the game successfully, the player will have to to experience it from the perspectives of both heroes, helping each other to gather clues and to unlock events.