An average, normal university student transmigrates into the royal family in another world, where he becomes one of the successors of the throne. Life in the palace is inevitably difficult though, what with all the scheming enemies around him. This man's only wish in this world is to be able to protect his "younger brother," and for that, he'll do anything–whether by hook or by crook–to ensure his brother's safety and have him succeed the throne.

The man never once expected, though, that the person whom he swears to protect would be the one to stab him in the back. He got locked in a dungeon where he was tortured for three years. And when he was on the brink of death, his body was thrown away into the river.

When he wakes up, he finds himself in an eccentric and peaceful place, where everyone is suspiciously more than what they seem…