A year after their mother dies in a mysterious spacecraft accident, Hayley and her brother Alex attend the Greenhouse - a notoriously competitive leadership school with an unconventional environment and eccentric students. Meanwhile, a strange intruder breaks into the Woods' house and steals data from the computer.

Carter senses that there was a break-in while he slept. Louis introduces the opening challenge, pitting the Ravens and Eagles against one another - causing Alex to struggle between his loyalties, and garner unwanted attention in Sophie's blog post. Meanwhile, the identity and aim of the intruder is revealed.

Daniel deals with the aftermath of a leg injury. Evidence for an ongoing case about a missing park ranger leads the FBI to investigate the Greenhouse and suspect a certain student. Meanwhile, the Eagles approach Alex with a request that ultimately tests his loyalties between his house and his family.

Daniel continues to hide secrets from Brooke as he prepares for the big Whitney game. Hayley makes a dramatic decision regarding her changing relationship with Alex while the rest of the Ravens are assigned their first big leadership project. A fisherman finds the missing park ranger's taser gun.

The Eagles play against Whitney. Daniel's injury overpowers him and Judy takes extreme measures to ensure his well-being. Jackie offers to repay Max for his kindness. Daniel endures the consequences of his secrecy, Hayley finds romance.

The Eagles prepare to elect a new captain. Hayley and Leo clash over different priorities. Brooke seeks out electrical advice from Marcus, the Greenhouse custodian. Louis receives VIP invitations to a NASA launch in Ryan Woods' honor.

Inner turmoil infiltrates the Greenhouse as the Eagles struggle to elect a new captain and the Ravens clash on how to solve their biggest leadership challenge yet. Meanwhile, Judy demands that Jason go to the NASA event in Louis' place.

Jason escorts Hayley and Leo to the NASA launch, but is too preoccupied in his secret mission to notice that his students aren't getting along. Meanwhile, Jackie helps Max score a date.

Jason threatens to expel Emma if she exposes their operation. Sophie makes her first big decisions as Eagles Captain. Brooke puts herself in danger after witnessing something that confirms her suspicions.

The Eagles and Ravens face off in a cupcake-selling competition for the Greenhouse Academy's annual charity event. Meanwhile, Carter returns to work.

Eric reads Ryan's letter to Carter, which reveals information about the secret mission. Meanwhile, the Greenhouse students prepare for and attend their Back to the Future themed Halloween dance, where there is an unexpected turn of events.

The Ravens reflect on the events from the dance as they clean. Social dynamics begin to change within both the Eagles and Ravens houses. Brooke and Alex reach a conclusion on what they think happened to the missing park ranger.