Valeria meets young fisherman DIEGO (20s, curious, unafraid) and his abuela, ELENA (70s, fierce, keeper of old stories). Elena warns: “The red tide is not a bloom. It is a memory. A long time ago, the town let a ship sink. They left people inside to drown. The sea has not forgotten their screams.”

The red tide is not killing randomly. It is targeting the descendants of the men who let the ship drown.

The tide is not gone. It is sleeping. And it has chosen its new keeper. A wide shot of the village at sunrise. The sea is blue again. Children are laughing. But beneath the dock, in the shadows, a single strand of red algae moves against the current – toward the camera.

Valeria realizes the algae isn’t evil – it is a colonial wound given form. It cannot be killed, only listened to . In the flooded church, she performs an act of witness: she speaks the names of the drowned, one by one, from a rotting manifest Elena kept hidden for 40 years.

The town is now trapped. The lighthouse suddenly activates on its own, but its beam is red.