Sonic The Hedgehog is Framed of the person who attacked Rainbow Dash but the thing is that it was the Erazor Djjin trying to get the Seven Chaos Emeralds, Sol Emeralds, Elements of Harmony, & The 5 Legendary Swords and also to release Discord Equestria mad pony also known as the spirt of disharmony.Discord goes to Sonic world after the team left to equestria and make eggmans joins them eggman happily joins. The Heroes must save their worlds by travling through many adventures and to defeat the evildoers plans.