THE EPIC CROSSOVER FINALE! The Justice League Unlimited stands alone as a wave of chronal mayhem crashes on the shores of their Watchtower base... but all hope is not yet lost! A last-minute mayday may just be enough to stem the tide... but for how long? Plus: the fate of Gorilla Grodd and a significant step toward the next major DCU event in the grand finale of We Are Yesterday, a special crossover with Batman/Superman: World's Finest!