Naive

The first episode begins with the disappearance of schoolgirl Tonya after going to the store. Her best friend, Lisa, blames herself for what happened. At school, everyone is discussing the disappearance, while history teacher Alexey Sergeyevich acts as usual and tries to calm the students. In Volgograd, investigator Natasha Krylova and her partner, Fedya, begin investigating the disappearance. No one knows that the real kidnapper is already just around the corner.
Characters:
Lisa is kind, calm, shy, and very concerned about her friends. After Tony's disappearance, she blames herself.
Tonya is a cheerful, sociable and brave girl who becomes the first victim of a kidnapper.
Katya is caring, responsible, and determined. She always tries to support her friends and never abandons them in times of need.
Alice is kind, anxious, and impressionable. She is deeply affected by current events.
Sasha is calm, reasonable, and reliable. He often tries to reassure others.
Maya is straightforward, bold, and a little hot-tempered. She's not afraid to speak her mind.
Dasha is observant, cautious and inquisitive.
Natasha Krylova is an experienced investigator, serious, intelligent, and driven. She is completely dedicated to her investigation.
Fedya is Natasha's partner. He's kind, simple, talkative, loves to joke, and always tries to support his colleague.
Alexey Sergeevich is a history teacher. In public, he's calm, polite, and caring, inspiring confidence in his students. However, behind this facade, he conceals his true intentions.