That Couple Has a Secret

Synopsis

The newlyweds who love each other the most in the world Serin and Sowon, have a secret that they cannot tell each other. The wife, Sowon, is the guardian of the kingdom of light, "Cryptic Rose", the husband, Serin, is the prince of the dark kingdom, "Avalanch". They became a married couple without knowing the other side of each other, and today they start a marriage fight? who risked their lives for love.