With this week's release of the Mass Effect 2 demo, comes this spoilers-heavy trailer recapping the story leading up to Mass Effect 2 (no spoilers from ME2 though). This second chapter in BioWare's sci-fi trilogy takes you to the darkest reaches of space, where you must uncover the mystery behind the disappearance of humans across many worlds. Prepare yourself for a suicide mission to save mankind. Travel the galaxy to assemble a team of soldiers and combat specialists, and launch an all-out assault on the heart of enemy territory. Success - or failure - depends heavily on the crew you assemble and their loyalty to you and the mission.