Buddies Meng Yun and Yu Fei break up with their girlfriends and indulge themselves in living the bachelor lifestyle again. However, as their ex-girlfriends reemerge in their lives, their “Single Plan” starts to unravel!

In the north in the 1990s, the passengers on the train were suddenly robbed by armed bandits. Railway criminal police Tie Wei and others fought life and death with the car bandits. This gang of car bandits is known as the Flying Tiger Gang. The members all have legitimate jobs as a cover, and they also have eyes and ears in the railway department. This has brought difficulties to the detection work of the public security department.

A story concerning the Chinese peasants during the transition period, and the victims of the economic wave during the period of China's reform and opening up.

At the airport, Lei Peng met a gentle girl who was highly similar to his ex-girlfriend, and he also met Shu Dai, a strange man who tried to match them up. The two parties reached a contract to "pretend to be a couple". A series of sweet and funny farce unfolded. It’s all calm, what's wrong, an astonishing truth surfaced, pointing directly to the accidental death of his ex-girlfriend