The House of Happiness is a world-renowned organization. It has many houses in various countries. They are famous for helping children who have had family problems. For several years, in addition to offering them therapeutic care, orphanages have begun to be set up.

Children are gathered by arrival group and not by age. When the last of the group reaches the majority, the latter are removed from the establishment. They provide safe support and then offer them a second chance. Far from their child worries. A number was assigned to each group. A generation. The next generation to leave soon, in a few months, was the number 5 group. There were 16 of them and their age ranges ranged from 17 to 20. However, the majority were 18 years of age.

It was September. The sun was shining brightly. The summer heat was still there, but it was much more bearable. The group was preparing for the idea that in December they would no longer be there in this house. Nevertheless, the time comes a little earlier than expected. To be honest, none of the 16 had clear memories of how they got there. He simply remembered that it was their good-bye game.