In 2028, there are four girls who gradually enter the workplace. In the process of slowly developing into the workplace, many, many things happened.
Their four families know each other and have a very close relationship. The two oldest ones are introverted and didn't have many friends in school. However, as they grew up, they slowly changed and became better people.
As they slowly enter their 20s, it will finally be their time alone...
Mission: Although there are many ups and downs on the road to growth, one must remain young.