Department of the Red God vent anger at the loss of his son. Viceroy of Hongsa Suphankanlaya to her son and daughter until death. It led the victory of King Naresuan avenge his brother, and she stepped to Bago leveled.

In 1584, at Kraeng, King Naresuan continued the war for the independence of the Ayutthaya Kingdom. The conflict escalated when King Nanda Bayin of the Toungoo dynasty secretly ordered two armies to attack Ayutthaya.

Joy is a former soldier, daughter of the Land Marine who was assassinated while on a mission. Joy was approached by a warrior, a close friend of her late father, to join the 'Project Busaba', a project to train tough girls to be assassins to serve the nation. She decided to join the project and passed the test, becoming an assassin under the code 'Busaba 029'. However, while she is doing missions, 'Busaba 029' finds suspicious things about her father and the project itself.