The lovely Olivia in her dreams saw herself as the wife of the handsome Colonel Sheridan. But her guardian had other plans for her - he intended her to be Samuel Sheridan's mistress. Olivia's heart is broken. Having changed into a man's dress, the girl runs away from home, not wanting to become an easy prey for the treacherous colonel. On the banks of the Great River she finds friends, enemies and amazing adventures, and here fate again gives her a meeting with the one who became the main culprit of her troubles. Young people are too absorbed in their quarrel and do not immediately understand that the passion that possesses them is as unbridled as a rushing stream and deep as a river.