This is set in Berlin - a city in Germany, where everyone is English-speaking with a neutral accent. The story is basically a police procedural, but the German TV networks rejected the pitch because it was too Sci-Fi for their market. The scripts were translated into English, and produced by US TV network NBC.
A girl named Nora wakes up in hospital with amnesia. She has strange dreams, which indicate something happened to her when she was missing.
David Leonhart (Falk Hentschel - Legends of Tomorrow ), a plainclothes cop, investigates drug dealers at a club. He discovers dead bodies, so the investigation is turned over to the Homicide detectives.
The Missing Persons detective informs Leonhart that tweenagers have been going missing at the rate of seven per week. The city has a wall of Missing posters five tall and forty long, which means there are a couple of hundred cases.
Nora falls foul of the local gangsters, a group of immigrant men from Turkey or Russia or somewhere. They are not given much of a backstory, because they are as valuable as redshirts or stormtroopers. Their job is to get fridged so the female protagonist discovers her powers. This also reveals the fact that she is somehow linked to a group of random citizens who are willing to sacrifice their lives in order to save her. As exposition goes, this is a case of show rather than tell.
David Leonhart (Falk Hentschel - Legends of Tomorrow ) and the Missing Persons detective become suspicious of their fellow cops. What looks like a little bit of corruption controlled by someone high up in the department has gone overboard. Good cops have been removed - not as part of a cover-up, but so they can be replaced by a bunch of creepy strangers.
Nora's boyfriend, a technician in the clinic, steals her file and smuggles it out for her. It implies that during her so-called childhood illness she was used as a control group in an experiment. If the other subject in the experiment was her twin sister, this would explain why the mysterious assassin is her doppelganger.
The clinic staff are at the heart of everything. Not only did they create the assassin, who now serves a different master, but they have been manufacturing the new drug Blis. Their next step is to make a deal with the Russian mob who are importing heroin and cocaine. This indirect competition is interfering in the uptake of Blis, so the clinic is willing to give away a free supply to the drug.
The protagonist and her friends dig up her sister's grave, and confirm that she never actually died. The end result is that the sister, a deadly assassin, becomes cynical and disenchanted.
David Leonhart (Falk Hentschel - Legends of Tomorrow ) investigates the Russian mafia, who are in a turf war with the mysterious makers of the drug Bliss.
The lesbian barmaid's brother is a police informant, in a safe house until he can testify against the drug dealers. When the mobsters attack the safe house, he goes on the run and gets involved in the main storyline. What is the population of Berlin? So small that all the main characters somehow interact by apparent coincidence!
Nora the protagonist and her friends continue their investigation. She has dreams about an abandoned warehouse covered in graffiti, and her younger brother shows her a website that has catalogued photos of all graffiti in the city.
David Leonhart (Falk Hentschel - Legends of Tomorrow ) keeps the Russian mafia boss chained to his radiator. How long will it be before the gangster can turn the tables on him?
Nora leaves her sister to imitate her, then sneaks out to spend time with her friends. How long will it take the mother to realise her twin daughter is back?
The Russian gangster seeks revenge on his son - or rather, the alien hybrid who used to be his son.
The storyline is now given exposition. Since Nora is the Queen of the hybrids, the next step is for a full-blooded alien to mate with her. It is an enormous CGI insect, and it breaks out of containment when the clinic is attacked.
This has a lot in common with Roswell, New Mexico (2019) . They both feature tweenage casts and storylines about alien-human hybrids. Unfortunately Roswell - despite its many, many flaws - is just far more watchable and involving than this effort.
David Leonhart (Falk Hentschel - Legends of Tomorrow ) is caught by the bad guys. They try to convert him, using one of their parasites.
The giant alien insect is on the loose, intending to procreate with the alien queen. The other characters try to prevent this.