FAIRY TAIL Vol 22

From the Kodansha edition

A ROYAL DOUBLE-CROSS! King Faust finally reveals his plan — and it's even crueler than anyone imagined! Happy, Carla and Lucy have to hurry if they're going to rescue Natsu and Wendy from the king's torturous magic extraction machine and stop a genocidal scheme that would kill the remaining Fairy Tail members. But first, they'll have to make it through… an amusement park?!

Source: Penguin Random House API