Cannon, despite his protests, was forced to bring his little sister, Lilly, with him and his friends when they went trick-or-treating.  That night he stole her candy and divided it among his friends.  One piece of candy was cursed and turned Cannon into living chocolate.

 

Image from Trick or Eat 7.

Cannon, now chocolate, is devoured by his friends.

 

Image from Trick or Eat 7.

Baba Yaga makes a deal with Cannon.

 

Image from Trick or Eat 7.

Cannon steals Lilly's candy.