The night has finally risen, dipper and mabel were both asleep in their pajamas, mabel seems to be sleeping happily because she is hugging marionette, it was suppose to be one normal night, but then one of the marionettes' eyes become white, and then the marionette successfully got out of mabels' arms, and started doing something very bad, (30 min. Later) the marionette also went to the bathroom secretly and washed itself, and went back to mabels' bed and wrap around itself with mabels' arms.
-7 hours later-
The Sun is finally rising up, and dipper is the first one to wake up, and he saw something terrible, he saw a disturbing message, written in red paint and says there "DEAD BY TONIGHT", and then there was an another message on the wall, also written in red paint that says there "GOODLUCK", dipper and mabel become disturbed, and has no idea who did this, so they tried to find out who did this, and dipper seems to be a little happy for now because dipper has finally a mystery to solve, but for now he's not really in the mood, and they really need to know who did this, but then mabel found something at the doorway, a trail of red paint, and mabel and dipper followed the trail and it seems the trail ended at the bathroom, "wow, that guy or gal is pretty darn good at being quiet" dipper thought, and then mabel and dipper went back to their room, and investigate the messages again, dipper found out something else, he took a closer look at one of the letters of the messages, they kinda look like sticks with a fat figure at the middle, more look like a hand, but the fingers look so slender and also a little tall, dipper and mabel become more curious, but then they were being called out by grunkle stan and they're going to him right now.
But meanwhile, after mabel and dipper left for the required assistance for grunkle stan, the marionette laughed in its head, thinking about a plan to take out mabel and dipper.