Cute story with very engaging leads. Just don't focus too hard on the plot which has a few holes in it. Jun Ji Hyun is gorgeous and absolutely delightful. Her ability to play goofiness and physical comedy is reminiscent of Sandra Bullock at the same age. Kim Soo Hyun plays quiet strength and vulnerability very well too. The script is by Park Ji Eun who also wrote "The Legend of the Blue Sea" and "Crash Landing on You", and it shares a lot of the feel-good elements of those. Definitely worth a watch!