Scarlet Heart Thailand is an upcoming historical fantasy television drama series starring Tontawan Tantivejakul and Metawin Opas-iamkajorn, based on the 2005 Chinese novel Startling by Each Step (Chinese: 步步驚心) by Tong Hua. The series will be directed by Kanittha Kwanyu and produced by GMMTV and Nar-ra-tor.^[3][4]

Transported through time by a mysterious sequence of events, a woman from the modern era finds herself abruptly awakened within the form of a young aristocrat's daughter. As she grapples with the unfamiliar customs and societal norms of this distant era, she becomes ensnared in the fierce competition among rival princes, each hungry for the throne's coveted power. Amidst the intricate tapestry of courtly intrigues and ever-shifting alliances, she discovers an unexpected allure drawing her towards these princes. Despite the chaos and uncertainty surrounding her, she finds herself increasingly captivated by their presence, navigating a delicate balance between burgeoning romance and the perilous realm of politics.^[5]

• Tontawan Tantivejakul (Tu) as Nabun / Chao Laila

(Novel character: Zhang Xiao / Maer'tai Ruoxi)

Nabun is a 21st-century girl, finds herself stuck in a streak of bad luck. Seeking an escape, she heads to Chiang Mai, only to be mysteriously transported 300 years into the past. She awakens in the body of Chao Laila, a sickly young noblewoman from the enigmatic Lanna Kingdom. In this new identity she navigate the complexities of survival and love in an ancient regime.

• Metawin Opas-iamkajorn (Win) as Chao Mueang Fah

(Novel character: 4th Prince Yinzhen)

• Korapat Kirdpan (Nanon) as Chao Saen Thep

(Novel character: 8th Prince Yinsi)

• Tawan Vihokratana (Tay)
• Nattawat Jirochtikul (Fourth)
• Phuwin Tangsakyuen
• Tanapon Sukumpantanasan (Perth)
• Jiratchapong Srisang (Force)

Scarlet Heart Thailand is the third drama adaptation of the novel after Startling by Each Step was made into a Chinese drama series Scarlet Heart starring Cecilia Liu and Nicky Wu in 2011 and a South Korean drama Moon Lovers: Scarlet Heart Ryeo starring Lee Ji-eun (IU) and Lee Joon-gi in 2016. The Thai adaptation was announced at the GMMTV 2024 UP & ABOVE PART 2 event on April 23, 2024, at Union Hall Bangkok,^[7] during which the network revealed the main cast and a minute-long video trailer.^[8][9][10] Pre-production began in 2024, and in September, the cast commenced ongoing technical training to develop the skills required for their roles. These workshops focus on horse riding, archery, traditional Thai dance, and sword combat, ensuring proficiency in movement, coordination, and historical accuracy.^{[11][12][13][14]}

• Scarlet Heart Thailand on Twitter
• Official teaser trailer on YouTube
• Scarlet Heart Thailand at IMDb