An eccentric archaeologist goes on an unexpected journey to find King Khufu's lost treasure with his daughter and grandson.

Delphine and Yvan divorce. While his financial situation does not allow him to find a home, Yvan remembers that he owns 20% of his ex-wife's house. He then returned to live with Delphine, in his 20%. The two ex will discover the joys of forced housemates.

When 43-year-old hairdresser Suze Trappet finds out that she's seriously ill, she decides to go looking for a child she was forced to abandon when she was only 15. On her madcap bureaucratic quest she crosses paths with JB, a 50-year-old man in the middle of a burnout, and Mr. Blin, a blind archivist prone to overenthusiasm. The unlikely trio set off on a hilarious and poignant helterskelter journey across the city in search of Suze's long-lost child.