It's Halloween night, and the Happy Tree Friends are out looking for some candy. As we pan through the area we see a happy Trippy dragging behind him a sack of candy more than double his size; Flippy and Karnage standing in a home; Itchy dressed as a ghost, wearing a sheet with two eyeholes, and Pop happily digging graves.
Sniffles now enters the scene, carrying a small sack of candy and wearing a collar of bells around his neck and a red ball on his nose. He approaches a house and rings the doorbell. He holds out his bag of candy forgetting to say "Trick or Treat". Unfortunately this is Braze's house, and without hearing "Trick or Treat" he assumes no one is there, so he slams the door shut in Sniffles' face.
Sniffles sadly walks away, while Jinx (dressed as a witch), Chips (dressed as the Grim Reaper and holding a scythe), and Ribbons (dressed as a ghost) walk up to Braze's house. Sniffles, seeing his chance to get candy, runs up to the door as the others shout, "Trick or Treat!" Sniffles holds up his bag with the others, all expecting candy.
Braze, however, accidentally drops the candy short of their bags. As the candy lands on the ground, rats run up and quickly eat the candy. Ribbons, Jinx, and Chips shriek and run away. Unfortunately Chips is actually carrying a real scythe, and while turning to run he cuts Sniffles' head off.
Sniffles' head lands on a group of pumpkins lying outside of Braze's door. Braze reaches down into the group of pumpkins and unwittingly picks up Sniffles' head.
Inside Braze's house, amidst a group of poorly carved pumpkins, Sniffles' head is plopped down. Braze cuts a circle in the top of Sniffles' head and removes his brain from the hole. Braze then drops Sniffles' hollowed out head outside of his house. Sniffles' head has a candle in its mouth and one of the eyes is hanging out. Before the episode ends, a rat approaches and takes the eye. As the screen goes black, a cheap paper ghost, identical to the one seen at the end of Boo Do You Think You Are?, drops down and wails.