Aboard a steamship sailing across the Atlantic Ocean in 1874, widower John Andrews delights the restless minds of his two children with a tale of courage, hope, war, and true love that begins with the end of the world.

After her fiancé leaves her before their wedding, Madeline goes to Niagara Falls to honeymoon without him. There, she reconnects with her adventurous side, learns to let go, and finds new love.