The first monarch dies due to the schemes of the 12 Sovereigns he defeated.
He woke up again and found out he had been born again as a baby. Moreover, as the daughter of his former companion (once his crush and his second right-hand man), he thought was dead. To regain his former power, Alexis has to go through a life of hardships to reach the goal she aims for. Yet solitude was part of life's burden for the powerful.