King Ketnikorn (Phol Phoolphaphat), a ruler without an heir, receives a divine blessing from Lord Indra, who disguises himself to bestow a magical crystal orb upon the Right Queen, Suwannarattana (Chanuttra Suksan). Soon after, she becomes pregnant and gives birth to a mystical crystal orb. Driven by bitter jealousy, the Left Queen, Wilawan (Chompoonoot Phuengphon), frames Suwannarattana, leading to the Queen's banishment into the harsh, desolate forest. Out of this isolation, a young prince named Phra Kaew (Boy Chonasit Ek) is born, living and hiding safely inside the magical crystal.

Years pass, and fate leads the now-grown Phra Kaew (Mit Mitchai) to love Princess Pathumma (Pinpinat Nitissakulphaisan) of Phokhai City, who had dreamed of his magical crystal. However, this romance ignites an interspecies war when the Giant King, Phattharchak (Wongsawat Suriyachaiwattana), falls for Pathumma and volunteers to capture Phra Kaew. Although Phra Kaew defeats Phattharchak, it sparks a deep, ancestral vengeance, triggering relentless invasions from the Giants. Amidst the brewing war and his quest to save his kingdom, Phra Kaew uses a clever ruse—hiding inside a music box to infiltrate the Giant Kingdom. There, a new romance blossoms with Ratmanee (Charinporn Ngencharoen), a beautiful giant princess who willingly betrays her own kind to flee with him.

But the tide turns into absolute tragedy when King Lokawinat (Petchdee Sriruk), Ratmanee’s father, hunts them down. His devastating attack shatters Phra Kaew’s sacred crystal orb. Having lost everything, Ratmanee decides to wear a mystical mask, transforming herself into Ngang Pa (Tachaya Prathumwan), a powerful demon. She embarks on a perilous journey to fight and find a way to resurrect her beloved. Yet, just as Ngang Pa is about to awaken Phra Kaew and reveal her true identity, Pathumma, his first love, reappears with a dark secret: she is pregnant. This sparks an agonizing love triangle among one man and two women, all bound by an intertwined destiny.

With the crystal shattered, his powers depleted, and the Giant army closing in for bloody vengeance—while her beloved husband is about to fall into the arms of another—how will Ngang Pa reclaim Phra Kaew? When will the secret of Pathumma's unborn child be exposed? And how will the conclusion of this "Interspecies War"... paid for with life, finally end?

Keaw Pis Dan