To Orc females 'handsome' humans are ugly ones so when they fight a knight who was protecting a group of people who was attacked by Orcs and his helmet come off they took him to their lair/home, where they fuck him and have him impregnate them.
The orcs are a group of females who hate human females because their brothers, husbands, sons, boyfriends, and other males keep falling in love with their bodies leaving them to get with the humans.