It was an ordinary day in Gravity Falls.... There was nothing foreshadowing trouble, but suddenly... The sky turned red... Cover in brown... A portal appeared in the sky and monsters came out from there.... And the main monster was a triangle named bill... Bill: it finally happened! Real flesh does anyone mind? Bill became alive... The city was about to turn into hell! Everything was burning... People finished and drooped... Deeper and Ford are now near the Mystery Shack building.... Mabel is imprisoned in a sphere with her dreams...