A family, a villa on an island on the French riviera, the height of summer. One day, a stranger arrives. Boris. He says he’s come to visit his old school friend, Philip, the prodigal son. But Philip won’t be arriving for another day or two… Boris quickly makes himself at home. Too quickly. The father, the mother, the two sisters are charmed, delighted—manipulated? Everyone is taken in by his incredible power of seduction. Only AndrÈ-Pierre, the brother in-law, resists. He dislikes his tanned, beach resort, bodybuilder charms. But why is Philip taking so long to arrive? Even the pool can't provide relief from the uneasiness and the heat. Never has it been so hot, never has the sea been this tempting, down at the foot of the steps, where Philip will eventually arrive.