A handsome young waiter named Nicolas is befriended by Frederic, a wealthy and mysterious middle-aged business executive. Frederic, a man of power, influence and strictly refined tastes is strangely smitten by Nicolas' charm and naivete. Lonely and phobic, Frederic offers Nicolas a lucrative job as his personal food taster, an offer that Nicolas cannot refuse. In spite of their differences, a close friendship begins to emerge between the two men. Soon, however, their bond of trust and admiration spirals downward into one of deceit and obsession with consequences for which neither is prepared.