When Dipper's secret journal pages lead him and the gang to the author's hidden bunker, they find themselves coming face to face with a mysterious figure from Gravity Falls' history.
After being belittled by Pacifica too many times, Mabel challenges her to a miniature golf off, which gets out of control when some local residents offer their help.
Soos makes a promise to his grandma that he can find a girlfriend in one week, and buys a dating simulator game to help him learn how to talk to women.