Political tension has escalated in the palace after King Hyejong was poisoned in his bath in the drama "Moon Lover: Scarlet Heart Ryeo." His brother Wang Yo ascended to the throne and divided the nations to his brothers.

"Moon Lover: Scarlet Heart Ryeo" shifted to a political drama after the palace was hounded by many unexpected events. King Hyejong, who just ascended the throne, was poisoned with third prince Wang Yo watching his brother died.

Wang Yo blamed Hae Soo for the incident as the poison was found in the king's bath. He also threatened fourth prince Wang So to either ally with him or join king Hyejong to the grave.

As Wang Yo ascended to the throne as the third king of Goryeo with the title King Jeongjong, he also prepared plot to eliminate his brothers Wang So, Wang Wook and Wang Eun.

In order to release the tension, "Moon Lover: Scarlet Heart Ryeo" Episode 16 also put in another love story. This time between 10th prince Wang Eun and Park Soon-Duk, the daughter of general Park Soo-Kyung.

The kissing scene between Wang Eun and Soon-Duk in "Moon Lover: Scarlet Heart Ryeo" has enchanted many viewers and gave Hera an opportunity to launch her acting career.

Accordingly, her romantic scene with EXO member Baekhyun, who plays Wang Eun, has given her a spotlight. The 20-year-old singer-turned-actress has received more offers for acting job, as reported by ET News Korea.

"Moon Lover: Scarlet Heart Ryeo" Episode 16 also open the door for the future conflict between the princes, and the unlikely alliance between Wang So and Wang Wook.

Wang Wook, who pledged allegiance to the crown prince Wang Mu when their father died, found himself in the unfavorable situation with King Jeongjong. His option is to make alliance with his former foe, Wang So.

Episode 16 will be aired on Oct. 17 on SBS.

Find out the official teaser trailer from SBS below: