Isagi and the rest of the Team Z players have passed the first selection and, one by one, they must cross the door that will take them to the second phase in which they will have to fight alone! Behind it, the latest generation intercom system, the BLUE LOCK MAN, awaits them. What will this training consist of!? More and more secrets will be revealed about this second selection phase! Meetings with new forwards and another match with the most surprising rules await Isagi!!