After signing up for the challenge, Park Eun Bin and Kim Hyo Jin team up to regain their much-deserved glory as singers.

However, they meet their biggest rival in "Castaway Diva" episode 6. Chae Jong Hyeop and Cha Hak Yeon reveal a life-changing secret. Read to now more.

Jung Ki Ho's Identity Gets Revealed

After seeing Jung Ki Ho's (Moon Woo Jin) photo with the Kang brothers' mother, Seo Mok Ha's (Park Eun Bin) suspicions amplify.

Because she sees the woman she replaced in the past, she fears for her popularity and stardom especially when Seo Mok Ha doesn't back down when the CEO challenges her to sing live.

Kang Bo Geol then interrupts, saying that they all need to sing live at the event. He also shares that he's aware of what they've been doing, which is why both singers need to sing.

While this gives Seo Mok Ha determination, Eun Mo Rae is filled with regrets and fear.

Kang Woo Hak Confronts His Father

At the Kang's home, Kang Woo Hak confronts their father, Kang Sang Doo (Lee Joong Ok), about what he knows regarding their real identities.

His father then reassures him that he will protect his family. Elsewhere, in a lake far from them lies a secret that has to do with the truth that the Kang family has been trying to hide.

KDramaStars owns this article.

Written by Elijah Mully.