The galactic federation possesses on planet Hydellius a great scientific research station. The best scientists of the galaxy works in this station and their last discovery was astounding! They have created a serum that enables creatures to be invincible! This finding is kept secret because all tests have not been done yet….But…since four days now, the station is mute… Samus Aran, the famous galactic detective is called for a high importance and confidential mission: go to Hydellius to find the reasons of this silence and get the serum back before it falls into bad hands!