Antonio and Estrella are two siblings who work as industrial divers on the coast of Huelva. The relationship between the two of them is complex. In order for Antonio to become a great diver, Estrella had to sacrifice her professional life and take care of their father, who suffered a long illness before dying. After risking their life for decades in such a dangerous profession, both are bankrupt, their father’s illness and Antonio’s bad head have left them broke. For this reason, when the opportunity arises to steal part of the cocaine shipments that are regularly brought in by the freighters that are passing through the port, Antonio and Estrella will put all their skills and expertise at the service of what may be their last job under the sea.