Due to a malfunction in your spaceship engine, you need to make an emergency landing on an asteroid. However, upon landing, your navigation system alerts you to lethal levels of radiation from the asteroid's soil. Your spaceship's shields are not strong enough to protect you for long: you must leave the asteroid before the radiation poisoning overwhelms you. The main frame calculates that you just need 51% of your «EVA Engine» power to take off from the asteroid and save yourself. In order to achieve that, you will have to install 4 engine components in the correct order. If you succeed, you will be able to leave the asteroid and win the game. Unfortunately, the components are damaged. Before reassembling the engine, you will need to fix the pieces and put them back in the right order before it's too late! And despite the nonnrequired opinions of those who judge a game before it is even released, this game uses "time track" mechanics.