The Edge of Horizon

Raised side by side, Tinnakorn and Phob discover first love despite the boundaries that keep them apart.

Tinnakorn and Phob's hidden relationship is exposed, threatening to tear them away from each other.

After deciding to pursue a military path, Phob struggles to prove himself worthy while Thinnakon faces increasing pressure from the royal family and court expectations.

Phob is assigned to assist with security for the royal celebration, using the mission as a way to get close to Tinnakorn again. Meanwhile, a political struggle that could shake the royal regime begins to unfold in secret.

On the day of the royal celebration, tensions reach a breaking point as the progressives secretly plot a coup. Standing on opposing sides, Phob and Tinnakorn are drawn into a life-or-death crisis.

Thin comes to accept that the more she tries to forget Phob, the deeper his feelings for him grow. Phob and Thin find their own private space where they can love each other freely and spend happy times together. But the day of the final showdown is drawing near.

Tinnakorn and Phob’s secret relationship is discovered by Tinnakorn’s father, who demands they separate for the sake of the family’s honor. Meanwhile, the Siamese Revolution erupts, bringing a sweeping transformation to both their love and the nation’s ruling power.

The Siamese Revolution succeeds, and Phob becomes one of those who helped overthrow the old regime. As the royal family loses power and the Varakulvatin family faces political reckoning, Phob desperately tries to win Tinnakorn back—only to receive a final goodbye.

As the royal family suddenly collapses, Tinnakorn and Phob’s relationship reaches an impasse. Standing on opposing sides, the two are forced apart.

The new government tightens press censorship, leaving Phob to question whether the revolution has strayed from its original ideals. Meanwhile, Tinnakorn’s grandmother’s worsening illness plunges him into the fear of losing another loved one.

As civil war in Siam reaches a breaking point, Phob and Tinnakorn are pushed to opposite sides of the battlefield. In order to save Tinnakorn, Phob is gravely wounded.