Years ago, aliens had taken control of the planet and humans were now their pets. In Blue Lock, for the entertainment of the aliens, they play football, the more points the group has the winner will be, the loser will be instantly eliminated.

The children are trained somewhere in Anakt Garden, where, instead of singing, it's football. They are trained to enter Blue Lock.

Apart from Blue Lock, there was also Alien stage, like Blue Lock, this works as the aliens' entertainment, but instead of football, it is singing, the system has the same function: If the winner has more points, the loser will be eliminated instantly. and, it will be the same rounds, both places have a total of 7 semi-final rounds