There are more than 1 million single mothers in Japan now. Their average annual income is about 2 million yen (about 1.8 million yen after deducting government subsidies, etc.). It is about one-third of the national average household income of 5.4 million yen. Under such a difficult economic situation, it is easy to imagine the hardship they have in raising their children alone. Being abandoned by society and finding a bright future in the vortex of poverty is very difficult. This drama is based on such a single mother as the protagonist, telling the survival story of a woman who desperately protects her beloved child despite being poor. It is a story of pure parent-child love that takes place in an unknown place in modern society with problems such as non-marriage and youth poverty. This is not only a cheering song for single mothers in the world, but also for everyone living in modern society.