A beautiful, ripe 40-year-old mother raising three sons. She secretly harbors an intense desire to have a girl. Without her husband's knowledge, she begins her last chance at "cuckoo fertility." It's an immoral ritual in which she welcomes the genes of a stranger into her own womb. Her ripe body greedily sucks in the young man's penis, repeatedly asking for creampies, as if certain of pregnancy. The forty-year-old's tolerance and her mad desire to conceive mix, and a forbidden fertility attempt unfolds, with thick love juices and semen mixing together.