Newly employed as an FBI Special Agent, Cullen finds that the job is not what he expected, while Officers Tolbeck and Reinhardt's bond grows at the SDPD. Dirk and Sue begin their new adventure as a newly married couple.

The SDPD brings in a PR representative (D'Arcy Carden) to address Tolbeck's accident and Dirk and Sue settle in at The Collective. Cullen and his new partner Risoli (Jillian Bell) begin to monitor a former cult member.

Cullen and Risoli's interrogation of the former Collective member reveals some startling new information. Meanwhile, Dirk meets his adopotive daughter, Madison

After Magnolia fails to infiltrate The Collective, Cullen and Risoli are invited to meet with its leader, Terry, and Sue returns from her meeting a changed woman.

Dirk takes matters of his marriage into his own hands after teaming up with the FBI and Dustin, who in turn is frustrated with Cullen's lack of enthusiasm and commitment to his documentary based on The Collective.

In this documentary from Jürgen Leibbrandt, the FBI investigates supposed cult The Collective and seeks the truth behind who really shot Agent Risoli.

After reuniting, Cullen and Tolbeck realize they have information that could take down The Collective.