Ever since being startled by a loud ‘bang’ at daybreak, Jessica (Tilda Swinton) is unable to sleep.
In Bogotá to visit her sister, she befriends Agnes (Jeanne Balibar), an archaeologist studying human remains discovered within a tunnel under construction.
Jessica travels to see Agnes at the excavation site. In a small town nearby, she encounters a fish scaler, Hernan (Elkin Diaz). They share memories by the river. As the day comes to a close, Jessica is awakened to a sense of clarity.