Star Wars Rebels: Civil War

What if things went differently on Malachor?
Ahsoka makes an unexpected return from Malachor but just as she returns, Rebel cells across the galaxy are taking heavy fire from the Empire and Kanan can't help but wonder if Ahsoka is filling Vader and the rest of the Empire with knowledge of secret rebel bases. This causes a breakout in the rebellion and the Ghost crew. Sides are chosen, friendships are broken and unexpected alliances are made. It's an all out Civil War!