Closed School. Quest 2

What is hidden behind the walls of the Closed School? The best students study there, and they need not only to achieve top grades but also to complete the most difficult scientific quests. Nagi and his friends passed the first challenge, but the second quest turns out to be much harder. This time, the principal's hint leads the team to a mysterious laboratory. The answers to their questions are hidden in lockers, and they need to find the "keys" to them as quickly as possible. After all, all the students have already entered the race for the coveted prize. But the main point is that one of Nagi's competitors is the mysterious Joker, who is ready to do anything to finish first.