It follows a love story between two men at a swimming pool. Martin (Marcial Di Fonzo Bo), a brash pool monitor and resident lifeguard Lucas (Jean-Michel Portal). Martin becomes interested in the younger and attractive Lucas but Lucas has a live-in girlfriend, Lise (Mathilde Seigner), so he is initially resisted. Later, Lise starts to integrate Martin into Lucas and Lisa's social life. Lucas then begins to doubt his heterosexuality and starts falling for Martin. But Martin is declared HIV-positive, which forces Lucas to choose between the terminally ill man he starts to love and his first love Lise.