The year is 5023. 100 years ago, there was a war. A big, BAD war that caused chaos to break out across the world. One day, this war all came to an end when the world's most powerful, yet VERY EXPERIMENTAL nuclear bomb was dropped, sending radiation waves all across the world. This radiation was so strong, that it mutated the entire planet, turning all the continents on Earth into one big world called...the Land of Ooo. 100 years later, there is a teenage boy named Finn. He is the last human left, and he is trying to survive the apocalypse with his stretchy anthropomorphic dog friend Jake. They fight off monsters and try to survive while living in a big tree house together.