The Master Chief crashed landed into an unknown world without a way to get back to the UNSC. However. Sonic and the heroes found themselves teaming up with an uneasy ally the Chief . But can the Master Chief makes a big difference in this new world as he battles new enemies and saving the galaxy at the same time. Based on the anime series Sonic X and Halo series.

New War series : Five years after the events of the war on Sera , The helghast army secretly unleashed a super soldier with a familiar face that is back from the dead codenamed DeathStroke posing a new threat to the ISA and their COG allies but it was out for revenge against those who wronged him.