Song Kang as Park Jae Hoon may have been a red flag, but fans were colour blind to notice.
The wildly popular survival thriller can be attributed to Song Kang's rise to superstardom.
A 70-year-old man and a 23-year-old man help each other rise to the challenge in this poignant tale.
Song Kang pursues his senior as love blossoms inside a national weather service, where love proves to be as difficult as predicting weather.
You may end up rewinding every other scene as Song Kang looks every bit dreamy in each frame in this fantasy romance saga.