The story of "King's White Horse" is about a young girl named Marie who is released from prison after several months. When she is released, it doesn't take her a long time to discover that her lover is on the verge of marrying another girl.

Taha (played by Amin Tarokh) returns to the country after many years of war and captivity in the war. But he realizes that everything has changed, even his family has changed, he does not know that there is a truth behind these bitter facts.

Leila, a girl from a poor family, who has no choice but to pick pocket in order to make ends meet. Leila meets Hamid Doosdar, an investor Businessman, while riding Metro that changes her life direction. Leila falls in love with Hamid and there is only one thing on their way, Hamid's wife. Leila considers the only thing blocking her happiness, Hamid's Wife. She plans her murder by using her ex-lover, but the story takes a completely different turn...