All Adventure Time fans of Fionna and Cake are in for a treat, with a super-sized collection of some of this Land of Ooo duos most memorable comic adventures being collected for the first time.

Each Fionna and Cake story, Sava goes on to say, encapsulated Adventure Time ’s greatness in just 10 minutes. Fionna and Cake Is Full of Surprises ...

The first two episodes that premiere on Aug. 31 won't answer that. Instead, they'll introduce you to Fionna and Cake's ennui then pivot back to Ooo, decades after the Adventure Time finale.

Q: Fionna and Cake were an instant hit when they debuted in 2011. That's my nice lead-in to ask what the heck took you so long to bring them back for another cartoon. A: Oh, maybe a couple reasons.