高層ホテルに集まった10人の男女に、ホカンス中は「自分の元恋人"X"が誰かを共有してはいけない」というルールが告げられる。それぞれが元恋人の存在の大きさなど様々な思いを抱えながら、過去の恋愛を乗り越え、新しい恋愛に踏み出だせるのか?! 出会いと再会、自分を見つめ直す旅が始まる。
Ten men and women gather at a high-rise hotel and are told the rule that they are not allowed to share who their ex-lover "X" is during the Hocance. With each one of them feeling the magnitude of his or her ex-lover's presence, will they be able to overcome their past relationships and embark on a new love affair? A journey of encounters, reunions, and self-examination begins.
