Jack's double life as a janitor by day and rocket engineer by night is further complicated by a new neighbour who appears to be leading a double life of his own.

Jack and Richard set off to create Caltech's first ever rocketry team; Ernest's looming presence makes Jack and Susan nervous.

Feeling pressured, Jack urges the team to take risks and start testing experiments at full volume; Ernest invites the Parsons to one of his group's secret gatherings, promising to make their dreams come true.

Jack's expert witness testimony at a high profile trial helps land the rocketry team an invitation to the Athenaeum; Virgil drops Susan's rebellious teenage sister off for a disruptive weekend stay.

The team finalizes their prototype but Jack doubts it will work; Susan gets better acquainted with Maggie; Ernest uses a mind-bending elixir to teach Jack about the power of Thelema.

A secret return visit to the Agape Lodge leaves Jack wanting more; Ernest's sudden presence at the rocketry team's new desert testing facility has Richard questioning the whole endeavor; Maggie has doubts about Ernest's fidelity.