The Sonic CD story arc is a series of strips that, when read together, are a loose adaptation of the Sonic the Hedgehog CD video game. Almost all of the arc concerns the Brotherhood of Metallix and their bid to rule over the Miracle Planet and Mobius (Planet Metallix), although there other activities taken from the game could class as an extension of the arc. Taking this into consideration, the Sonic CD story arc is by far the longest saga in Sonic the Comic, beginning in Issue 21 with the introduction of Amy Rose and has been revisited as late as Issue 255, although it could be argued that Issue 79 was the proper climax.