Are You Human

While the real Nam Sin grows up with his grandfather, his mother creates Nam Sin III, who looks and acts deceptively human but is a robot.

On his first day as Nam Sin, Nam Sin III upstages Seo Jong-gil at a company event and meets Kang So-bong, a former bodyguard who holds a grudge.

So-bong goes back to her old job and snoops around for Jong-gil. Meanwhile, Ji Yeong-hun and O Ro-ra try to protect their secret.

So-bong comes close to uncovering the truth about Nam Sin III -- but he's one step ahead. Jong-gil hatches another vicious plot.

Following a big revelation, So-bong packs her bags but finds it difficult to leave. Meanwhile, Nam Sin III is ordered to marry Seo Ye-na.

Ye-na refuses to give up. So-bong and Nam Sin III work out a new arrangement. Jong-gil overhears crucial news about Nam Geon-ho.

While trying to seize power in the company, Jong-gil runs into trouble with Geon-ho. Ye-na learns something accidentally.

Ye-na shops for a wedding dress. Yeong-hun deals with suspicions about his motivations. So-bong overhears a disturbing conversation.

As Nam Sin III deviates from his programmed rules, So-bong begins to see him in a different light -- and Ro-ra considers what to do.

Nam Sin III makes his own choices. Ye-na discovers her father's true nature. David meets with the project’s mystery benefactor.

Ro-ra grapples with a difficult decision. Ye-na confronts Jong-gil, who's positive that there's something strange going on.

Nam Sin III comes face-to-face with Nam Sin. So-bong and David work together to try and change Ro-ra's mind.

So-bong advises Nam Sin III to stay away from Nam Sin. Geon-ho prepares to hand over his position by testing his potential successors.

As he resumes his daily life, Nam Sin struggles to come to terms with Nam Sin III's existence and raises eyebrows when his old personality returns.

Made to act as Nam Sin's puppet against his will, Nam Sin III fights for his freedom. Ro-ra finds out David's secret.

Nam Sin tries to force Geon-ho's hand. Yeong-hun seeks help from Nam Sin III, who needs a little encouragement from So-bong.

Yeong-hun and Nam Sin III make an explosive announcement at the shareholder meeting. Nam Sin gets his hands on a dangerous device.

As Jong-gil attempts a final power grab, Nam Sin III faces a choice between saving Nam Sin -- or saying goodbye to So-bong.