After surviving from the Eclipse Cannon and seeing suffering from amnesia, Shadow the Hedgehog as he sets off to discover and find answers of the truth about his past and find out who - or what - he really is, but his past showed his primary destiny that is not even he knew about. He was already created by Gerald Robotnik, but his DNA comes from the dark lord and leader of the invasive alien race the Black Arms known as Black Doom. Black Doom tells Shadow more about his past than he already knows. So much horrible truths to turn Shadow against his friends and humanity. That's how Shadow is powerful. He was originally going to be the vanguard for Black Doom's invasion. Now Shadow is torn between Maria's wish and his prior destiny chosen by Black Doom. Shadow chooses to continue his hero role, but he'll have to team up with his friends Team Sonic, The Freedom Fighters including Sally Acorn who turned out to be an love interest of Shadow, his partner Rouge, new ally and powerful and intelligent robot named E-123 Omega, The Chaotix, unlikely allies include Eggman Empire and G.U.N. in a three sided war to stop Black Doom and his army of alien invaders, Black Arms from taking control of the planet. Shadow will eliminate his enemies, repay what he did in the previous adventure, and vanquish Black Doom. For he is Shadow the Hedgehog, the black warrior and the protector of Earth who will tear down his enemies one by one.
