In the beginning of "Bienvenidos a Edén", we are introduced to the central protagonist, Zoa. She appears to be alone on an island only for it to cut to 2 days earlier. This is a common tactic for writers to try to increase the watch time for a movie or tv show because the audience becomes intrigued as to how the character ended up in that situation. Once we cut back to the past, we get a glimpse of the disdain that Zoa has for her mother. At first, we don't understand why, but in the next episode we learn that the origin for this disdain is that her mother is a drug addict and keeps asking Zoa for money. Conversely, this is when we first begin to see how much Zoa really loves her sister, Gabi. Although most people can't empathize with Zoa due to her unique upbringing involving her parents, the audience feels a notable amount of sympathy towards her because Zoa seems to be a good person with a pure soul who wants the best for her sister. Having a likeable main character is a frequent occurrence in the industry to keep the story appealing to the audience. The audience wants Zoa to find a way off the island so any attempt at doing so will catch the gaze of the viewers. As discussed in 'The Ending', the writers made this part of the script very memorable.

The antagonist of this season is none other than Astrid. People can make the argument that Erick could be considered an antagonist, but to me he is more of a pawn in a much larger game. At the end of the first episode, our protagonist meets our antagonist for the first time and this is where dramatic irony takes effect. Dramatic irony is when the audience of a piece of literature knows something that the characters do not. Earlier in the episode, we are introduced to the notion that these 5 partygoers were chosen for a particular reason. The characters have no idea that they were left behind on purpose and not by accident. Our perception of Astrid at this point is that she is hiding something deeper, but the forsaken islanders have the impression that she is comforting and welcoming towards them. This is the moment where things begin to escalate. For a story, the exposition usually precedes an opening conflict. "Bienvenidos a Edén" is no exception to this rule.