Zhao Daye, a bully in the Tongzi building, welds an iron box and puts a lock on the public water tap to extort water fees, and even blocks neighbor Li Qiang's front door with stinking coal ash and swill. Faced with the hooligan's provocation, Li Qiang, an eighth-grade senior machinist at a large factory, refuses to put up with it and directly uses hardcore technology to deliver a dimensional reduction strike! You put on a big lock, I cut off the water pipe at midnight and physically reroute it; you block the door with swill, I borrow an industrial-grade pneumatic gun to blow all the poisonous mud back into your living room! Step by step, Li Qiang not only digs out the criminal evidence of the Zhao family illegally hooking up 380V power, but also sets an exquisite mechanical trap to catch turtles in a jar, thoroughly sending the cornered bully father and son into prison. Watch how the technical machinist uses his craftsmanship to straighten out the courtyard and launch a hardcore counter-kill!