Hiroshi, a young man who dreams of becoming a photographer and currently attends a vocational school while studying photography under a photographer and learning photography on the job, one day decides to visit the home of his girlfriend, with whom he has been dating for six months. When he greets her mother, she is a breathtakingly beautiful and intelligent woman... As the conversation progresses, Hiroshi ends up using her mother as a subject for his photography practice, and he can't help but feel a sense of indecency as he sees her bulge every time she changes pose...