Beauty possesses no measure, but not many are as lucky to be born with a kind heart and radiant, porcelain skin. Lee Taeyong is flawless - an artificial intelligence created by rebel citizens to overpower the government. However, he is considered a technological mistake by the majority of society and is abandoned by his creators. Taeyong lives a relatively peaceful life as a second class citizen until the government discovers what he really is; under his flawless beauty are wires and metal. Taeyong finds himself under the wing of the government and during his time in experimental labs, he meets a boy that possesses more beauty that he could ever imagine.

Taeyong is trapped in a cycle as the government scientists experiment on him - the constant reminders that he was never human; just a machine with a fancy exterior, one without a heart. However, the handsome boy that visits him everyday promises to help him uncover his human past. After all, Taeyong would rather be disgusting - the ugliest being alive, than to live knowing that he'd never once held an ounce of beauty inside.

But falling in love with the boy wasn't what Taeyong expected.