Gearbox has released a new trailer that explains the premise of the story of Aliens: Colonial Marines: as a group of Marines have chosen to explore the wreck of the U.S.S spaceship Sulaco and look for tracks property crew disappeared.

Here we're going to indescribable horrors and find the first clues about a galactic conspiracy that would leave people at the mercy of more dangerous alien race, and the mission will turn into a fight for survival in an attempt to uncover the truth. Find the video clip below, and please note that the game will arrive in stores on February 13.