The Heroes of Gravity Falls

The seven plus Will, Calypso, Juniper, Reyna, Grover, Nico, Thalia, and Rachel are going to Gravity Falls, Oregon for a vacation. Seems innocent, right? WRONG! All fifteen of these demigods get involved with a new prophecy, along with Dipper, Mable, Stanley, and Stanford Pines. Will Gravity Falls get destroyed, or wil...