In the bustling city, two families live parallel lives, separated by wealth and social status. As the two families navigate their lives, they face challenges and triumphs:

Oru Second Class Yathra is a comedy thriller where Vineeth Sreenivasan and Chemban Vinod play thieves, while Sreejith Ravi and Joju George play the roles of police officers. The film is set on the journey of these four in the train from Kannur Central Jail to Thiruvananthapuram.