1. Speak to Suspicious Coffin in Prontera (156, 134).
2. Trick and Treat will ask you to deliver Organic Pumpkin and Non-organic Pumpkin from Organic and Inorganic Jakks to Chef Candycon.
3. In order to fullfil the delivery order, you will have to gather 30 points between Organic and Non-organic Pumpkins and deliver them to Chef Candycon in Nifflheim (181, 173).
4. Upon completion, you will be rewarded with 1.
5. Once completed the first delivery, you will be able to keep delivering 30 points worth of pumpkins.
6. In exchange, you will be rewarded with Halloween Box every 30 points.