While his body and soul are free, his heart is tied up in chains. Phansaeng learns the forbidden martial arts and magic to avenge the death of his parents and sister and to eliminate the corrupt, but it comes at a price. He must not love, for that would weaken his power and kill him. What will Phansaeng do when he needs the power to save his country from corrupt nobles, but he already has feelings for Chawala, the sister of his arch-enemy?(Source: Ch3Plus)~~ Adapted from the novel "Jai Khang Jao" (ใจขังเจ้า) by Kram (คราม).