Thian ‘Tarzan’ de Vries is a young kickboxing sensation from the Netherlands who is rapidly conquering the international fight scene. Behind his invincible image, however, lies a turbulent past marked by addiction, crime, and time spent in youth detention. Kickboxing became both his escape and his salvation. As Thian rises through the ranks toward global recognition, an unease grows beneath the surface: can he keep control when the system that protects him begins to crack?

‘Zwaar plat’ (Knocked Cold) is a raw and intimate documentary about fighting – inside and outside the ring – and about the fragile balance between discipline and self-destruction. The film portrays not only a relentless athlete but a complex young man caught between freedom and confinement, strength and vulnerability.