The story takes place in the bustling international metropolis of Shanghai. The high-rise buildings in Shanghai block out the sky and the sun, and the neon-lit nights are full of endless temptations and opportunities, but they are also accompanied by tremendous pressure and fierce competition.
Cui Wei and Zhang Ming, two young men, are busy day and night in an office building in Shanghai, struggling desperately for a meager salary and an unattainable dream. They work as security guards in this fast-paced city.
By an unexpected opportunity, the two of them walked into the cinema to watch a fantasy film "Bear Bears: Reverse Time and Space". After the film ended, they magically reversed time and space and returned to Lin County in 2016. Lin County in 2016 still retains its simplicity and tranquility. The streets and alleys are filled with the familiar smell of fireworks, and the greetings between neighbors are cordial and warm.
Cui Wei returned to this era with a special wish in his heart - to pursue the girl Zhang Xiaoyu who had left a deep impression on him...
