Gravity Falls: Happy Summerween!

It’s Summerween in Gravity Falls, and the Summerween Trickster has paid Dipper and Mabel a visit. They have to collect five hundred pieces of candy before the last jack-o’-melon goes out…or else! Can Dipper and Mabel collect enough candy to save their souls, or will they run out of time and become the Trickster’s treat?