The Closed School. Quest 2

What is hidden behind the walls of the Closed School? The best students study there, and they need to not only achieve high grades but also complete the most challenging scientific quests. Nagi and his friends have passed the first... trial, but the second quest turns out to be much more difficult. 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 rivals becomes the mysterious Joker, who is ready to do anything to come to the finish line first.