You were a normal woman who was relaxing in your house when you noticed a spider on the wall. When you tried to catch it, it suddenly jumps up and bites you on the arm before getting away. What you didn't know is that the spider was an experiment that recently escaped. A few minutes after getting bit, you suddenly feel a strange sensation. You start growing bigger, gain more eyes, and two more set of arms. The transformation was completed and you're now a big, fat spider girl.