Nina has been married for a while, but the couple still has no children. Her parents-in-law constantly urged her, making Nina feel extremely pressured. On the occasion that the whole family will go on a hot spring trip in the near future, her mother-in-law asked Nina to curb her sexual desire a month before the trip. The couple releasing their pent-up sexual desire for a month at the hot springs will make it easier for Nina to get pregnant. And the day of departure has also arrived, the whole family set off together. When she arrived, because she had been restrained for a long time, Nina was already craving a fuck. But Nina's husband ignored this, leaving her and causing Nina to masturbate herself to relieve her cravings. Nina's father-in-law also wanted to fuck his wife, but she wouldn't. Passing by Nina's bathroom, he saw that she was masturbating, from which he also learned about Nina's current situation. After dinner, Nina continued to masturbate. This time my father-in-law couldn't stand it anymore, he went inside and fucked her! Nina only resisted weakly, she was also quickly overwhelmed by the feeling of craving, the pleasure that her father-in-law brought. Nina took the initiative to kick her tongue, squirming into her father-in-law's big bare cock, letting him cum in her uterus. During their stay, the two secretly fucked each other over and over again, even though Nina's husband was sleeping next to her. After returning for a while, Nina found out that she was pregnant. Her husband and mother-in-law were extremely happy, only Nina and her father-in-law felt extremely confused, because they both knew who the child in her womb belonged to...