Zhou Gu, a building safety inspector who is proficient in structural mechanics but suffers from severe social barriers, only wants to be accompanied by data and drawings. One day, he received a safety inspection task in the old community "Fu'anli" and accidentally discovered that there were systematic falsifications in the structural data of Building 3 - this residential building built twenty years ago and declared "qualified" by the developer "Hengda Group", the actual carrying capacity is close to the critical value.
When he tried to file a report, he was silenced and even threatened by company leaders. Zhao Fucheng, chairman of Hengda Group, a real estate tycoon who made his fortune through violent demolitions, is planning to demolish Fu'anli and build a high-end commercial complex in the name of "shantytown renovation." In order to force residents to move out at a low price, he ordered his subordinates to cut off water and electricity, break down doors in the middle of the night, and even hired gangsters to beat old people who refused to sign.
Zhou Gu is trapped between professional ethics and personal safety. His report letter fell into disgrace, his colleagues were bribed, and his residence was targeted. The only original data that can prove the truth of the dangerous building is hidden in that crumbling old building. He had to overcome his fear of communicating with others, walk into the residents, and use his professional knowledge to work with the group of elderly people who refused to leave to find a crack in the situation under the oppression of power.
On the day when the demolition team forcibly entered the site, Zhou Gu stood on the roof of the building, holding a real-time monitor in his hand and using a loudspeaker to read out shocking numbers one by one. He wanted the whole city to hear the last cry for help from this dangerous building.
