The season revolves around the various antics of two fraternal twins, Dipper and Mabel Pines, who were handed over to their Great Uncle (or "Grunkle") Stan, who runs a tourist trap called The Mystery Shack, in the town of Gravity Falls, Oregon.

The entire series was intended to be edited for YouTube, but the editor that was going to edit it ended up becoming too busy with important life things and so only episode 1 was edited for YouTube. I have reacted to the series in its entirety though so if you're interested in watching the full reactions for this show, you can find them here.