The Queen's Life was At Stake

A women is shocked to find herself transmigrated into a novel as the meek Princess Guinevere. Sentenced to die for asserting her claim to the Twilight Throne, her fated death is all but ensured. That is until a mysterious man helps her escape, destroying the novel's natural progression in the process and offering Guinevere the chance to rebel against the madmen who dared oppose her claim.