In a colorful and eccentric house in New York, the Sycamore family lives on the fringes of conventional society. The matriarch, Martin, is a woman passionate about the arts and theater, while her husband, Paul, is dedicated to making fireworks in his workshop. Alongside them live a series of unforgettable characters: their daughter Alice, who works in an office and tries to lead a more "normal" life, and their grandfather, an elderly man with a curious philosophy of life that rejects any semblance of conformity.
The equilibrium of this outrageous family is disrupted when Alice falls in love with Tony Kirby, the son of a rigid business mogul, who seems to be everything her family is not. As their relationship deepens, Alice faces the impossible task of uniting her two worlds: the jovial and carefree Sycamores and the dignified, yet cold, Kirbys.
When Tony's family shows up at their house for dinner, the clashes between the two worlds inevitably become hilarious. The night turns into a series of misunderstandings and absurd situations that challenge the true meaning of happiness and family. Through the chaos, it is revealed that perhaps what matters most is not privilege or appearances, but love and the authenticity of life. The film offers a refreshing look at the struggle between personal freedom and societal expectations, all seasoned with charming humor and a profound message.