The fifth volume of the all-ages bestselling Adventure Time Mathematical Editions is here! Princess Bubblegum is facing a lot of trouble when one of her experiments backfire on her, the land of Ooo is in danger...and so are her friends! Without the help of Finn and Jake, it's up to Princess Bubblegum to clean up her own mess, and hopefully save her kingdom in the process. This fifth volume of the over-sized, hardcover Mathematical Editions collects Adventure Time issues #20 through 24 at a newly reduced price of $24.99!