A college student coming home from his part-time job runs into a girl in the rain who apparently ran away from home. Pity takes the better of him when invites her out of the rain and into his home to warm up for the night... only for him to realize that she wants to repay the favor with sex...
Erika notices that our ostensible protagonist is seemingly always out, which leads her to think that he's messing around with other girls. Unsettled by it, she decides to tail him, only to find out what's really up...
After seeing Erika hanging out with a male friend from school, jealousy erupts into a night of passion. Even if his mind still doesn't understand how he feels, his body will lead him to his true emotions for the runaway girl. Erika and our protagonist enjoy a whole day of sexy times together.