Meet Kyle, a young college boy who lives in London. He was bullied a lot in high school for being quite intelligent but when he came to college, he got enrolled into a good college that his bullies wanted to go to. Before he enrolled, his bullies said "we are better than you and we'll get into that college while you rot on the street." In actual fact it was the other way round.
The reason our story is on Kyle is that since he is very smart, some of the college kids wanted him to go to their Halloween party. This is Kyle's first party and he didn't know the best place for a costume so he wondered around town until he came across 'Hallow's magical eve'. It appeared to be a seasonal shop dedicated to Halloween so Kyle visited it.
As Kyle walked in, a man with a Jack o'lantern mask on greeted him. The man claimed to have magical items that could give the perfect costume. At first Kyle had his doubts about a single item able to change into a full blown costume but the man (who had a name tag that said Hallow) showed him an example.
The man brought a young lad in who was helping around the shop and he put a dog collar on him. In the next instant the boy turned into a full blown werewolf which shocked Kyle. The costume appeared to be so realistic, it could be mistaken for the real thing.
The man later took the collar off and seeing the power of the item. Kyle quickly looked through each item that was on the shelf. Kyle saw a whole lot of items and assumed that each would cause some kind of costume to appear.
(This is based of Lady ombre's new moon sales by wrenzephyr2 on deviantart)