Dipper and Mabel Pines return to Gravity Falls for their second summer, but they never expected to meet people who could turn into weapons and for Bill Cipher to return with a new ally.

Cipher watched from the shadows under the stain-glassed window as the twins switched from meister to weapon in fighting the latest monster hiding in Gravity Falls: this little training ground away from Death's watch was the perfect place to train the latest Pines family weapons, and wouldn't the Kishen be proud once he unleashed the chaos of two stolen Death Scythes on Shibusen.

Before Dipper and Mabel spent the summer with their Grunkle Stan, Medusa came to town, and it wasn't for the scenery