In a charming yet somewhat chaotic country house, Susan's life, a devoted homemaker, takes a dramatic turn when her brother, an eccentric inventor, comes to visit with a revolutionary gadget aimed at eradicating pests. However, his experiments go awry and unleash a series of comedic and disastrous events that transform the peaceful home into a real battleground.
As the family tries to cope with the fallout from her brother's experiments, Susan faces the challenge of maintaining harmony in the household. The situation is further complicated by the arrival of her in-laws, who disapprove of their son's antics and the sophisticated schemes of her brother-in-law. With every attempt to resolve the issue, hilarious misunderstandings arise, causing everything to spiral out of control, and the pests they initially aimed to eliminate become mere accessories in family mishaps.
Amid ridiculous setbacks and moments of pure comedy, Susan must find the balance between family, love, and the madness her brother has brought along. As tensions rise, the family realizes that the real pest isn't the mice or the insects but the differences and misunderstandings that can sometimes infest us. In the end, family ties are tested but also strengthened, reminding us that, despite everything, there is always room for laughter and love amidst the chaos.