Mayumi Tezuka, an elite office lady working at a foreign company, has been married for seven years but has no children yet. Feeling exhausted from balancing work and married life, she seeks emotional comfort and decides to take a solo trip to Minakami Onsen while her husband is away on business. However, she gets caught up in an unexpected incident and meets a man named Ryuhei, marking the beginning of a new chapter. What unfolds during her journey and her encounter with him will profoundly transform Mayumi's heart, sparking intense anticipation.