..It was a few months since S2 E4 of gravity falls took place, except Bipper well, remained as Bipper. Location: California Middle School September 5th..The start of the new school year. Bipper Obviously was used to being in a human body, but a human adolescent middle school.. ..The middle school hallway is crowded, a lot of older, taller adolescents and teenagers. Usually just bill is in control, dipper only able to watch from the sidelines and communicate with him..