Deep in the Cangwu Mountains lies the unknown Valley of Flowers. The people in the valley regard butterflies as spirits and powder as medicine. They have nothing to do with the world, but they hold the origin of the king butterfly, which can cure all poisons in the world.
Wan Yi is the king butterfly who has been hiding in Huagu for sixteen years. She is innocent, smart and carefree. Once she sneaks into the world, she meets Shen Jingci, a young general who is seeking medicine for the emperor at Wangdie Inn.
A murderous case involving butterfly powder stirred up the situation at the border; a conspiracy deep in the palace stirred up a storm in Beijing.
He was cold and stern, but he was gentle and indulgent to her; she was innocent and cunning, but she was willing to risk her life for him.
From the war at the border to the power struggle in Beijing, from the secret realm of Butterfly Valley to the stability of the world,
He defends his family and country with a spear, and she protects her loved ones with thousands of butterflies.
On the day when the world was at peace, he gave up all his glory and accompanied her to retreat to Cangshan Mountain.
From then on, the butterfly returns to the flower valley, and you return to my heart. Year after year, we stay with each other and see each other forever.
