Wasteland Awakening

Grima's attempting to destroy humanity, but Naga has an ally with a contingency plan. 2 of the Wasteland's greatest heroes, and some of the heroes of this world's past, are on their way, but will they be enough to stop Grima? Will the bonds these heroes form with the Shepherds and the other heroes be enough to help them push through? Robin (F) x Chrom; Courier x Morgan (F)