Underworld: Rise of the Lycans (2009) on Netflix

When the human son of a werewolf is born in a cell, the evil leader of the clan of vampires, Viktor, spares his life and names him Lucian. He then forces him to transform other humans into the new breed - Lycan, and raises him as a slave wearing a leash to control his ability. Along the years, Lucian becomes a brave warrior with a great leadership over the other Lycans. He protects the aristocratic vampires during the daylight against the vicious and infectious breed of werewolves that are unable to take human form ever again. However, Viktor's daughter, Sonja, and Lucian are lovers and they secretly meet each other every now and then. Lucian unleashes and transforms in a werewolf to save the life of Sonja in a battle against the werewolves. However, Viktor sentences him to be brutally whipped thirty times and then imprisons him in the dungeon. Sonja saves Lucian and he escapes with other prisoners to the woods. When Viktor discovers that Sonja is pregnant and in love with Lucian, he locks her up in her room to force Lucian to return to the castle to rescue her, in the beginning of the feud between the two bloodlines.