The Movie Pulival Kalyanam is based on the story of Harikrishnan (Jayasurya) is the adopted brother of Karuna (Lal). In an accident Karunan loses his right hand and now it is the duty of Harikrishnan to look after his family. Though Hari is an engineering graduate, he gets no job and he turns to the profession of Karunan - To light the crackers at the temple festivals.
Hari needs some money for the wedding of Karunan's sister Sreekutty. At the bank, where he goes to get a loan, he meets Ganga (Kavya Madhavan), the daughter of Raghavendra Sett (Lalu Alex), a millionaire. Accidently, their mobile phones got exchanged there and they started getting misleading calls..