Madonna's exclusive actress, Yurie Matsushima, is the first challenge for 4 productions & drama works! Yurie is divorced from her husband and lives with her only son Toru. Recently, Toru's child-rearing has become less and less difficult, and Yurie has begun to seriously consider remarrying her boyfriend Yuji, who is in the same situation as "diversity with children". One day, Yurie receives a proposal on a hot spring trip planned by Yuji. And a few days later, four people, including each other's stepchildren, will start living under one roof...