A South Korean fantasy romantic comedy that tells the story of an extraterrestrial alien Do Min Jun who landed on Earth during Joseon Dynasty, fast forward to 400 years later he met a top female actor who looks very much like his lover in Joseon. Wanting to find out if she is actually his lover, he kept helping her unintentionally as eventually he fell in love with her. But he fell in love with her with 3 months remaining on Earth. Watch to see how their relationship unfolds.