After the war, a composer-turned-soldier leaves the beautiful Italian girl who had nursed him back to health and desperately tries to reestablish his marriage with his wife in London. Inspired by the legend of a girl whose spirit moves in the shadows of the Glass Mountain (the majestic Italian Alps), he writes an opera. While attending the premiere in Venice renews his relationship with the Italian beauty. It is only when he learns that his wife crashed on the same mountain while flying to his performance that the confused composer begins to unravel the meaning of his life. The Glass Mountain features many singers from La Scala appearing in the opera sequence.