It it the six week break and Peter lives in a small town with half muggle and half wizards for the holidays he invited his friends James,Sirius and Remus to his for the six weeks you are a cashier for a small sweet shop (this is the sweet shop Peter regularly goes to) he took his friends so Remus could see the chocolate and Sirius and James could freak out over how muggle sweets were so different to wizard sweets