Inspector Montalbano is awake at dawn, sitting on his porch, when his attention is caught by a seagull which falls from the sky, performing a strange dance, before lying down to die. Montalbano is perplexed by what he has witnessed and the scene hangs over him like an omen.
About to depart for a holiday with his girlfriend Livia, Montalbano makes a quick trip to the police station to tie up loose ends. But when his dear colleague Fazio is discovered missing – and it transpires that the policeman has been involved in his own secret investigations – Montalbano instead launches a desperate search for his lost friend, as time begins to run out . . .