Mabel learns it’s good to be the boss as she takes control of the Shack when Gravity Falls returns with new episodes on the Friday Feb. 15 (9 p.m., ET/PT). It all starts when Mabel questions the way Stan runs the Shack and he challenges her to a bet – whoever can make the most money in three days wins the chance to run the Shack however they wish for the rest of the summer. Mabel takes the bet, throws on the biggest shoulderpads she could find and tries out some new/old leadership methods that have her coddling her employees and encouraging them to follow their hopes and dreams. But the results are not quite what she expected and Mabel finds herself just trying to get back some normalcy.