My Dad Is the Crown Prince

Fleeing her father's attempt to sell her, Brenna stops Edmund's carriage on a rainy night and begs for help. She admits she has been drugged and asks Edmund to save her. After confirming her request, Edmund takes her into the carriage.

Seven years later, Brenna shines shoes to save money for her son Mark's asthma treatment. Her brother breaks in, steals their savings, and threatens to kill Mark to settle gambling debts. Mark tries to protect his mother but is struck, and a man intervenes at the critical moment.

Mark suffers an asthma attack and Edmund saves him with medicine. Mark insists Edmund is the father from his dreams, and Brenna goes along with it to drive off her brother. Edmund proposes a deal: Brenna and Mark will pose as his wife and son at the king's birthday banquet.

Mark recovers after taking Edmund's special asthma medicine. Edmund notices Mark shares his exact symptoms and asks about the child's father, but Brenna deflects. He offers a lifetime supply of medicine if they pose as his family at the banquet, and Brenna agrees.

Edmund brings Brenna and Mark to meet the king. Mark calls him grandpa, delighting the king, who orders gifts and the finest chamber prepared. Eric and Sylvia immediately object, claiming the child has no royal blood and warning the king not to pass the throne to an outsider. The king declares he will strip Edmund of his title if deceived.

The king orders Edmund's childhood portrait brought out and sees that Mark looks exactly like the young prince, making Edmund wonder if Mark could be his son. Eric and Sylvia keep questioning the boy's bloodline, and Sylvia presses Brenna about her family background, leaving Brenna at a loss for words.

Edmund announces that Brenna is the daughter of House York, the most powerful noble house in Atherland, silencing Sylvia's questions. At the banquet, Mark thanks the king for the food. In private, Brenna tells the king that Mark's father is a traveling merchant who never returned, and Edmund curses the man who abandoned them, unaware he is cursing himself.

The king invites Mark to choose a gift from a pile of treasures. Mark passes over the jewels and asks only for the old ring the king has worn for years. Touched, the king gives him the wedding ring. Sylvia and Eric mock the choice and grow resentful, seeing the ring as meant for the future heir.

Sylvia suspects Mark is a fake and writes to her father to investigate Brenna. She orders High Priest Thorne to bring the sacred flame to the king's birthday banquet, planning to expose Mark. Thorne sees a six-year-old boy in the flame destined to be a great ruler, and Sylvia assumes it is her own son.

Sylvia receives a letter from her father revealing Brenna is no noble lady and Mark is just a shoeshine boy. She resolves to expose the imposters once the high priest brings the sacred flame. At the banquet, Mark presents the king with five carved wooden grandsons, delighting him.

Foreign envoys present gifts to the king, who sends Mark and Brenna to eat first. Unfamiliar with the lavish food, their manners draw scorn from Sylvia, who mocks them as lowborn peasants and has her son Giles insult them. During the scuffle, Mark loses the ring Edmund gave him and searches for it frantically.

When Sylvia mocks Brenna and Mark's table manners, Edmund sits beside them, saying food tastes good with family. Eric protests it is unbecoming of a noble, but the king gladly joins in, recalling how he ate with soldiers on the front lines and declaring the kingdom will flourish under Edmund's lead.

Sylvia accuses Brenna before the king of being a fraud and a poor baguette seller, claiming Mark has no royal blood. She presents a letter from her father stating House York has no adult daughter, and announces that Brenna's father and brother are being brought in while High Priest Thorne arrives with the Sacred Flame. The king demands the truth from Edmund, and Mark's plea is silenced.

Eric and Sylvia urge the king to punish Edmund and tout Giles as the true royal heir. High Priest Thorne arrives with the Sacred Flame, declaring only royal blood can withstand it. Edmund confesses Mark is not his son, and the king orders Mark's hand into the flame as Brenna fights to stop it.