The "Gateland Incident" occurs around the world: every seven days, random people are forcibly pulled into a death copy that distorts reality. The rules are strict, and those who violate them will die, and the existence of losers will be completely erased - no one will remember that they have ever lived.
Former neurosurgeon Lu Chen encountered a portal invasion during an operation and has since fallen into endless trials. In order to save his sister Lu Xi, who fell into a vegetative state due to him, he embarked on a desperate journey to clear the seven gates. He has a rare talent - he can peek into the "cracks in the rules" and briefly tamper with the rules of the copy, but every time he uses it, he will forget a memory related to his sister.
From the silent ward to the city-burning apartment, from the live trial court to the memory recycling bin, Lu Chen formed the "Reverberation Team" with the hacker girl Lin Yuan, the retired firefighter Lao Chai, and the calm forensic doctor Su Miao, struggling to survive amidst the strange rules. However, the gatekeepers are pressing harder, and the former allies are betraying themselves, and the final truth is even more suffocating: the gate domain is not a natural disaster, but the self-selection of human civilization; the leader of the gatekeepers is actually another version of himself who has given up on emotions.
When the seventh door opens, Lu Chen must make a choice - restart the world and forget everything, or destroy the system and die with what he loves?
The rules are written by it, and life or death is your choice. But remember: the most deadly rules are often hidden in the words you believe the most.