Beautiful Rose Carlton, a "kept" woman of the wealthy and possessive Chan Lo, escapes San Francisco's Chinatown on a ship bound for Alaska's gold rush territory. The ship's captain, Bull Brackett, instantly falls for Rose but she is distracted by her new cabinmate, Sister Annie Alden. Exchanging philosophies, the unlikely pair develop a meaningful friendship before Sister Annie becomes sick and dies. Meanwhile, Bull learns Rose is wanted for murder but tells her he will stand by her. Rose, in desperation, changes identities with her deceased friend and once in Alaska, is inspired to a new calling.