Day One - Samuel
The first episode of Day One introduces us to Ulises ( Álex González ) who has lived in seclusion for the better part of a decade following the death of his sister. Out of the blue, he's contacted by his old programming partner Samuel ( Asier Etxeandia ) who has discovered something dark at the heart of tech billionaire Diskin's ( Jordi Mollà ) next release. Uncovering the dangerous truth about the product that might put millions in jeopardy, Samuel reconnects with Ulises but is killed before the details can be explained leaving the programmer on the run both from the police (who mistakenly believe him to be responsible for Samuel), Diskin and his agents, and the assassin ( Renata Notni ) who killed Samuel whose true allegiance has yet to be determined.