In a global sky-park, two dreamers pin their hopes on a damaged Princess Android - their possible salvation or doom. A psychological thriller between the clouds and lurking shadows below.
Fionna and Cake - with the help of the former Ice King, Simon Petrikov - embark on a multiverse-hopping adventure and journey of self-discovery. All the while, a powerful new antagonist determined to track them down and erase them from existence lurks in the shadows.