One day, Masha Uno, who lives in Okayama, receives a mysterious letter containing a photo of a woman in a floral dress holding a little girl, with the words "I'm waiting for you in a place of memories" written on the back. On the back of the photo, "I'm waiting for you in a place of memories" is written. The letter also includes a ticket to Yokohama, his hometown, and a hotel reservation coupon. Nothing seems to be going well for Masha, who hasn't been back to her hometown for a long time: a friend she can't see, her father who can't get through on the phone, a party full of strangers, her ex-boyfriend who meets her by chance and then disappears, and the "place in her memories" that she doesn't have a clue about. At a time when she is at a loss, Masha suddenly sees the floral dress worn by the woman in the photo in the window of the street. ......