The movie 'The Devil Came to Stay' is a devilish comedy that tells the story of 'Seonji' (played by Yoona), who transforms into a devil every dawn, and 'Gilgu' (played by Ahn Bo-hyun), an unemployed young man who takes on the bizarre job of watching over her.
The film also stars Seong Dong-il and Joo Hyun-young and is set to be released on August 13th.