After his teenage son is last seen crossing a bridge over the River Vistula, a father's relentless search through its murky depths consumes everything.

Most believe Chris jumped, but for Daniel, nothing adds up. He develops his own machines and technology to scour the river's creeks and embankments, his efforts eventually helping recover other teenagers lost to the water, though never his own son. Reported sightings of Chris wandering the countryside keep hope painfully alive, while TikTok videos he left behind unsettle more than they explain. As grief takes hold of Daniel's life entirely, the filmmaking matches his restless energy, the camera never settling, the river never still, an eerie score holding everything in tension. Closure is a film about those left behind, told with an intimacy and persistence that mirrors Daniel's own.

Content guidance: Film explores themes of suicide.