After divorcing her husband, she took custody of her second son, while her husband took custody of their eldest son. One day, her ex-husband passed away, and the three of them reunited. They decided to go on a trip together, but the second son’s schedule didn’t work out, so they decided to go with just the eldest son. The eldest son, unable to contain his growing longing for his mother since they hadn’t been able to see each other, kisses his mother. At first, Chiyuki refuses, but eventually gives in, overcome by the loneliness of being apart. The two find pleasure in the warmth they feel on each other’s skin, and before they know it, they have sex again and again. This is the story of a forbidden incestuous trip where lost time is reclaimed and a new relationship begins.