In 1862, Mercy escapes a bleak future in London and joins a bride ship. Wealthy and titled, Joseph becomes the ship's surgeon to avoid the pain of losing his family. He has no intention of settling down, but when Mercy becomes his assistant, they must fight against a forbidden love.

Unemployed mill worker Zoe Hart jumps at the opportunity to emigrate to British Columbia in 1863 to find a better life and be reunited with her brother, who fled from home after being accused of a crime. Pastor to miners in the mountains, Abe Merivale discovers an abandoned baby during a routine visit to Victoria and joins efforts with Zoe, one of the newly arrived bride-ship women, to care for the infant. While there, he's devastated by the news...