Lee Dong Wook opens up about his karaoke experience with "Goblin" co-stars Kim Go Eun and Gong Yoo on "Sea of Hope" on Tuesday, Aug. 10. Everything started when "The Tale of a Gumiho" star told Eun he would sing a live duet with AKMU's Lee Suhyun at the seaside bar.

"Sea of Hope" is JTBC's new variety show, where celebrities perform and prepared homemade meals for guests at the seaside bar. Here, Wook decided to sing, which surprised Eun, Soompi noted.

With a laugh, the 30-year-old actress asked Wook why he suddenly wanted to sing live when he did not sing that much. Here, he revealed every time they would go to karaoke, Eun and Woo usually did all the singing.

Eun, then, revealed it was the "Train to Busan" actor who often sings more than her. If they sang ten songs, Eun would sing six, while Yoo would take three and a half-the remaining half would go to Wook.

So, the 39-year-old actor could not help but to get nervous about his performance. He asked Eun what he would do and how he would sing, revealing he was only doing it because Suhyun asked him.

Meanwhile, talking about Yoo, the K-drama superstar's latest movie, "Seo Bok," is now airing On Demand at the Fantasia International Film Festival, Forbes reported. He plays the role of Ki Hun in the film.

He is a desperate man haunted by his past deeds. He only wants to remain as loyal as possible to the security forces he belongs to and does those deeds for.

Yoo works with Park Bo Gum in the movie, playing the role of Seo Bok, who has the same honesty and sweetness as a child. Living a sheltered life, Seo Bok has no idea what the real world is, so he asks Ki-Hun many questions about it.

He is trying his best to differentiate what is right from wrong. From here, Seo Bok realizes his very own existence is the problem. "Seo Bok" is a sci-fi thriller film that features a lot of action scenes.

It also highlights the extraordinary paranormal power of Gum's character. Anyhow, the film's director, Lee Yong Ju, focuses more on the relationship between Seo Bok and Ki Hun.

One of them is dying, while the other is going to live forever. As they question whose life matters the most, they will decide if "life is measured in deeds or years."

Once again, Yoo and Gum reveal their incredible acting talents in "Seo Bok." The movie was supposed to be out earlier, but the COVID-19 pandemic happened.

Anyhow, it finally hit the theaters in April, ranking number one in the box office on its opening day. Fans can still watch "Seo Bok" On Demand until Aug. 25.