One day, Colin Thorne, son of billionaire venture capitalist Sir Harry Thorne, heads to Steinway & Sons in London to locate and purchase a high-end piano for him to play. He wanders around the showroom and meets Sorrel, a gorgeous young Frenchman. Colin tells Sorrel he isn’t looking for a standard high-end showroom piano; he wants something worn in and used, someone else’s beloved instrument. Sorrel is working on his doctorate at Oxford on piano mechanisms. The two quickly pair up as sexual athletes eager and hungry to meet each other's ravenous appetites.

Colin and Sorrel date and have a romantic relationship, with Sorrel commuting to Oxford and Colin in medical training. The two frequently question whether they are ready to settle down with each other due to their exhibitionist tendencies and desire to display their rock-hard bodies in any public forum they can. Colin leaves his father’s house and gets a flat, inviting Sorrel to move in with him. They have a variety of sexual experiences until one day, Colin catches Sorrel in bed as he tops (gasp!) an older man.