WHAT

A prostitute who sells his body while in debt, 'Lee Tae-hyun'. When he finds out that his only beloved colleague, 'Choi Woo-yeon', was assaulted by a customer, he goes to room 666 of Gwisan Villa to get revenge. However, what was waiting for him in room 666 was not a customer, but 'Jeong-woo', the only son of a gangster family who runs a drug company. Jeong-woo, who kills a person and gets high on drugs, mistakes Tae-hyun for someone else and carries out his own revenge... The story of Tae-hyun, who sells his body but is pure at heart, and the rogue drug dealer Jeong-woo becoming close physically.

It’s only sleeping together while holding hands, nothing else. That’s what Shin Wooseo tells himself when a red ring that ties a person to their soulmate appears on his finger one day. Once two people get tied by the ring, they cannot fall asleep unless they’re physically together. However, his destined partner isn’t his long-term friend and secret crush, Kang Jiseok, but rather his older brother, Kang Jigeon! And so starts the tragedy of loving one brother but having to share beds with the other. Although, it might not entirely be a tragedy, as Kang Jigeon doesn’t seem so disappointed about being tied to his younger brother’s best friend...