Overview:

Sang Woo and his sibling Wan Jin come to his home with a drunk new employee In-hye after a company dinner. In Hye can't get up the next day. Sang Woo asks his younger brother Wan Jin for help and goes to work first. In Hye, who woke up late, heard about yesterday's situation from Wan-jin and went to take a shower to go to work, but she collapsed because she felt dizzy.