Le coucou: Maxime Depratte, a charismatic company director, invites Corentin Michelot, his meticulous and unassuming accountant, to dinner to "fix" a compromising financial statement just hours before a board meeting. Ségolène, Maxime's wife, is very upset about being an accomplice to this foolish dinner. However, through misunderstandings and plot twists, the three of them will uncover the hidden sides of their own personalities.