A virus is spreading like a pandemic, making infected hubots uncontrollable and dangerous. Bea is reactivated after several months, and she resumes her desperate search for David's lost code.

Bea continues searching for the code that makes machines human. In her search for the scientist David Eischer’s clone, she seeks out David’s mother. Tobias struggles with his transhuman sexuality, as his heart still longs for Mimi. The Engman family receives a package containing their Granddad’s clone. Meanwhile, at Hub Battle Land, Silas works to get the business off the ground and Roger arrives for a job interview.

Bea and Cloette have finally located David’s clone, but the brain is missing. They continue their search while Tobias and Matilda investigate the code on the USB drive. A segment is missing and Matilda suspects that Mimi knows more than she lets on. When Roger is sent out to pick up a hubot, he’s in for an unpleasant reunion. Florentine’s dream is about to come true - she’s finally going to marry her Douglas. But perhaps human life is not all it’s cracked up to be.

Douglas and Florentine plan their wedding, and Claes can’t help interfering. Back at the Engmans’, Lennart’s clone is increasingly obstinate, in particular towards Hans, who is starting to lose patience. Mimi is hired at the law firm, but not everyone likes having a hubot as a colleague. The conflict between Real Humans and the Transhumans grows increasingly antagonistic. Sooner or later everyone will have to choose sides.

Bea and Cloette have finally located David’s clone, but the brain is missing. They continue their search while Tobias and Matilda investigate the code on the USB drive. A segment is missing and Matilda suspects that Mimi knows more than she lets on. When Roger is sent out to pick up a hubot, he’s in for an unpleasant reunion. Florentine’s dream is about to come true – she’s finally going to marry her Douglas. But perhaps human life is not all it’s cracked up to be.

Therese wants to move to the more liberal Holland, but first she wants to try to convince Kevin to come along, so she visits him at the Real Humans Youth Camp. Tobias, Betty and Matilda decide to program David’s code into Lennart, with no idea of the consequences. Douglas and Florentine are placed on a three-year waiting list for adoption, but Florentine has no desire to wait - she wants a child now.

Douglas can’t live with the fact that Florentine stole a baby, but she refuses to give it up. Rick is armed and isn’t about to back down from any human. Jonas starts up David’s clone and tries to get him to provide the code, but he is forced to turn to Bea for assistance. She, however, has other plans. Mimi installs a language program from an unsafe website to help Inger, but the program contains more than just the language. Gordon breaks into Florentine’s house to rescue her from Douglas.

The virus is having a debilitating effect on Mimi. Hans is forced to take her to Einar in hope of curing her. Florentine goes to the law firm to hear the reading of Douglas’s will and a giant secret is revealed and David tries to find a way to save Bea from Jonas while he works on the code. Jonas realises that the code is out there somewhere and sends Silas out to find it. Meanwhile, Rick continues his revolution, naming himself its leader.

Mimi’s condition has worsened and the Engman family discover something about her past. Petra goes to the police and Real Humans to destroy Florentine. Claes and Inger must fight fire with fire to save her. Meanwhile, Jonas continues with his plan to transfer his consciousness to his clone. To do so, he needs to ask Silas for a big favour. Jonas starts doubting David’s clone after a revelation from Bea.

Florentine’s future is being settled in court and Mimi, wracked with the virus, is called as a witness. Then, an unexpected person from her past appears in the courtroom. Kevin and a group of Real Humans Youths decide to go to Hub Battle Land to destroy hubots. Meanwhile, Rick, who is armed, aims to do all that he can to defend Hub Battle Land from humans and Bea gets Roger involved in the search for the code.