He is a solo traveller flying into a small Roman town for one concert — the band that made him who he is, and he has never seen them live. He messages a stranger whose profile picture happens to have the colosseum in it, and lands with a guide, a co-conspirator and four days. Eighteen chapters of a beach stakeout, a locked castle they climb into anyway, a temple at midnight, and a goodbye at the airport that neither of them manages.