If you want an even briefer recap, Wonder Woman’s mother led an attack force against mortal humans due to mind control from Ares and Hades, making for an Amazon civil war that then led to a deific war and now leaves players scrambling to stop Circe and Ares from dethroning Zeus himself. In short, it’s a lot of antics. Check out the recap, and also check out the trailers for the first two story installments to get back up to speed in a visual format.
Source: Official Site