It's a mysterious invitation to Fermat's math seminar. Only five people can answer the questions about the law of numbers. They were told to meet at the designated place on a certain day and at a certain time, and they could only appear under aliases. There are mathematicians, logicians and inventors in this group ... When they arrived at Fermat's room, they found it was a strange mechanical room. If they can't answer the specified puzzle (open the question) within 1 minute, the four walls of the room will be compressed and pushed in, and eventually people will be crushed into a paste.
The key to their ultimate salvation is the relationship between the four of them, which is not only a fascinating mathematical problem, but also a chain of emotional interests between them. Finally solved the mystery of their relationship and found out the murderer. A good movie, very thrilling. I hope I can help you.