The male lead spends all his savings to buy a storefront and open a business, only to have the middle-aged woman next door demand that he sell it to her at an 80% price! Taking advantage of their status as neighbors, she makes his life difficult in every possible way, creating noise in the middle of the night, spreading rumors and slandering him, and doing everything she can to ruin his business. In an attempt to seize the storefront, she even blocks the public drainage ditch, causing the entire street to suffer flooding during a stormy night. The male lead carefully gathers evidence at every turn and refuses to compromise or back down. The mother and son, who scheme relentlessly to obtain demolition compensation, eventually face punishment. In the end, he receives an unexpected reward and learns that only by standing up for the law can one protect one's home.