Sisyphus (Season 1)

Sisyphus (2021) is a Korean science-fiction thriller you can watch online on iFILM. Han Tae-sul is a celebrated engineer who built his fortune on quantum technology — until he spots something impossible on a flight home and his orderly life cracks open.

A decade ago his older brother died under circumstances no one could explain. The thread leads to Kang Seo-hae, a hardened fighter who has traveled back from the future to find him and keep him breathing. Cho Seung-woo and Park Shin-hye anchor a plot where time jumps, gunfights and a slow-burning conspiracy keep folding into one another. The closer the truth gets, the deadlier the next move.

Director Jin Hyuk blends detective work, action and time travel until no single label fits. It rewards viewers who like big-budget Korean spectacle built around temporal paradoxes. Stream Sisyphus online on iFILM.