Bad kids

Ideal crime. One fine morning, math teacher Zhang Dongsheng pushes his wealthy relatives off the observation deck of Sanmingshan National Park. Everything is calculated to the smallest detail. The police considered it an accident. Close people. Zhu Chaoyang is the... best student in the school. Due to his thirst for knowledge, Zhu is endlessly lonely. Everything changes when his childhood friend, Ding Hao, unexpectedly returns into his life with his named sister Pupu. They escaped from a shelter for children whose parents were convicted of murder and are now desperate for money. Blackmail. While walking in the park, the teenagers accidentally filmed the murder committed by Zhang. And now they offer the killer to buy incriminating evidence, ready to do anything to achieve their goal. But Zhang does not intend to dance to someone else’s tune. And then the darkness begins...