Girls' Generation Sooyoung's great acting could be seen on the most recent episode of "The 3rd Hospital."

On the October 10 episode of the drama, Sooyoung finds out that she has a brain tumor.

Sooyoung's usual bright and happy personality was not seen at all as she put 200% effort into this scene to try show how it would feel to truly feel sadness while standing in front of the one you love. Many viewers could relate and were shocked by her great acting skills.

The next episode of "The 3rd Hospital" airs today when Sooyoung suddenly disappears.