Titre original : Best Laid Plans
To ensure that they will see their parents again, Ryan devises a plan to steal some algae and use it to make a deal with Eli. The plan goes awry, however, when Tom tells the gang that the algae will rot if it is not kept in a cold environment. Meanwhile, Eli woos Natasha while she is upset with Ryan. When Natasha finds the antidote on Eli’s desk, he confesses that Bonnie faked being sick. Taking the antidote with her, Natasha leaves Eli, telling him that Ryan and Saskia were right about him all along. Saskia intercepts Natasha and reveals that Eli has a crush on her, driving Natasha back to Eli.