The novel follows the intertwined lives of two men, William Lowell Kane and Abel Rosnovski, who are born on the same day but into vastly different circumstances. Kane is a wealthy Bostonian, while Abel is a penniless Polish immigrant. Their paths cross in a tale of ambition, revenge, and rivalry as they each strive for success and power in the banking industry. Despite their mutual animosity, their lives are inextricably linked, culminating in a dramatic and unexpected resolution that highlights themes of fate, legacy, and the complexities of human relationships.