Yuka Amagase is a naturally made-up, easygoing 32-year-old homemaker in her fifth year of marriage. She met her husband at university, and the couple bonded over camping trips that let them enjoy the outdoors. Over time, however, their marriage has started to feel more like friendship, with almost no sex at night. Her naturally strong libido fuels a growing desire for an affair, and she finally visits a porn studio behind her husband’s back to make her debut.