The Duke's Secret WeaponEpisode 4

Modern mercenary Liam Carter is suddenly transported to another era, where he awakens as the disgraced heir to the Duke of Northreach. Mocked as a useless prince, Liam is surrounded by enemies waiting to steal his title. When a rival kingdom challenges the court, he shocks everyone with modern knowledge, brilliant strategy, and weapons no one has ever seen. With the help of master weaponsmith Victor Hale, Liam turns the tables, defeats an elite warrior, and catches the attention of twin princesses Elena and Elise. His enemies are about to learn who they underestimated.