A married woman named Maki has been raising her daughter almost entirely on her own due to her husband's lack of attention towards their home life. To relieve stress, she secretly creates an SNS account where she shares selfies wearing swimsuits. As time goes by, she becomes more daring in her photos. However, one day, her daughter's boyfriend Hiroyuki discovers these intimate images. He insists on seeing her in person while she's still in her swimsuit, and despite her hesitation, Maki finally agrees. When they meet up, Hiroyuki gets an eyeful of her voluptuous body in the revealing swimwear...