Gravity Falls (2012)

S1E12 Summerween

Dipper and Mabel decide to celebrate Halloween during the summer by going door-to-door for treats. However, their fun takes a turn when they cross paths with a candy-obsessed creature who demands a steady supply of sweets, or else he’ll make them his next meal. The siblings must come up with a clever plan to outsmart the monster and escape his sticky clutches while trying to enjoy their summer festivities.