Set in 1942, Nuantong Tong Ruethai follows Nuantong, a young Thai-Chinese man who becomes a caregiver for Hiranthon, the paralyzed son of Khun Luang Hemarit Ronnawee, a key figure in Thailand’s transition to democracy. Initially, Nuantong and Hiranthon clash due to prejudice, but their relationship evolves as Hiranthon admires Nuantong’s resilience, and Nuantong empathizes with Hiranthon’s struggles as a war-torn, hopeless man.

Their bond deepens despite challenges, including Rinwalai, Hiranthon’s ex-fiancé, whose presence reinforces Nuantong’s doubts about love between men. Hiranthon’s reassurances lead to their mutual acceptance and support from their families. However, Rungrueng, Rinwalai’s father, forces her into a marriage with Hiranthon to protect Khun Luang Hemarit from political threats. Rinwalai flees, prompting a daring bride swap at a mass wedding where Nuantong disguises himself as the bride.

Defying societal norms, Nuantong and Hiranthon ultimately choose to live together, finding happiness and love. The story explores themes of resilience, acceptance, and the courage to challenge conventions, blending historical context with a touching romance.