Sooyoung started off by congratulating the start of the play, and then recommending the warm, feel-good story. The musical is actually produced by SM C&C, and tells the story of a blind actor who meets a girl who claims to be his daughter, even though he's had no idea.

SEE ALSO: "They're so good, this is what K-pop should be like," Girls' Generation's past live performance gains spotlight after 8 years

Even if he doesn't know whether she's his real daughter or not, they become closer and closer. However, she has to leave him all of a sudden, leaving for a story of hero that seems plain, but is the greatest in a little girl's heart.

Check out the video above!