Vishwasam... Athallae Ellaam is the story of Jomon played by Shine Tom Chacko and his frequent conflict with A S A Luka, his father played by veteran actor Shankar. Jomon is a very spoilt brat and he seldom know how to lead a practical and successful life. He believes that a person can amass wealth only using intelligence. As he wishes, he is entrusted with a task that can make his ambition a reality, but his lack of knowledge in practical life lands him in several trouble.

Omanakuttan is an introverted salesman who is down on confidence and luck. Spurred on by his colleague he decides to change himself and tries to act like a flirt. He meets Pallavi a free spirited girl, but as luck would have it he wakes up with memory loss and struggles to figure out who he really is. Both of them join in on an adventure to figure out the real Omanakuttan.