Bunny and the Bull

Stephen has agoraphobia and, in the flat he won't leave, meticulously labels and stores everything from nail clippings to urine. In long flashbacks we see a trip to the continent he took with his only friend Bunny, an outgoing, inveterate gambler. The European trip is a bit dull (Stephen wants to visit every museum imaginable) until one night in Poland they meet Eloisa, a Spanish waitress, and offer to drive her home for her city's fiesta. We can guess that the trip won't end well - because Stephen is now stuck in his flat with occasional visits from Bunny - but will anything in the reverie move Stephen to action?