A brief explanation on what happened in the first 3 Episodes:

ZAPATERA: Kono, Erin, Robb, Samantha, Sean, Cat, Sal, Kels
OMETEPE: Amy, Matt, Alexa, Zach, Cutecat, Nate, Holly, Viola

ZAPATERA:
Drama started between Erin/Sean and Erin/Samantha. The first alliance formed, which contained all the "normal people" (Sal, Cat, Kels, Robb, Kono). Sean then tried making a plot about voting Erin out if they lose so he made an alliance with Kels, Robb, Cat and Kono. Erin becomes close with Sal. Samantha finds the first Clue to the Hidden Idol, and tells Sal, who finds the second Clue.

OMETEPE:
The first alliance formed was between Matt and Zach. Alexa and Amy started arguing, and Alexa formed her own alliance with Holly and Viola to try to get Amy out. Amy tried convincing Matt/Zach to vote with her, and he tried getting Cutecat to throw her vote so Alexa would be voted out. Matt/Zach actually voted Cutecat at the first TC along with Alexas alliance, and Cutecat called Amy out and instead actually voted for her. Amy then got mad at Matt and Zach for lying. Amy knew she would be the next one out so she raged. Matt felt bad for lying to Amy so he decided to try to save Amy at the second TC to make up for what he did. He got Viola and Holly to vote out Nate instead along with him and Zach. Alexa was the only one who voted Amy. Afterwards, everyone turned on Matt. Amy and Alexa finally alligned because they were sick of Matts lies and decided to vote him out. Matt tried desperately saving himself and tried getting Alexas alliance to vote out Amy. Alexa then made a deal with Zach, and Alexas alliance, along with Zach all voted out Matt.