It is not a matter of debate to acknowledge that it was the team of Mohanlal, and Sibi Malayil who created the best of the plots and films in Malayalam in the last decade. Films like Kireedom, Sadhayam, Chenkol, Maayamayooram, Dhanam , Bharatham, Kamaladalam, His Highness Abdulla and Dasaratham - all by the duo are rated as the best that was witnessed in the nineties. They did the last film together way back in 2000 title 'Devadhoodhan' which met with dismal results in the box office. Now after seven years, the duo are coming together to create another great work in the new film `Flash'.

Flash scripted by journalist S Bhasurachandran is tipped as a psychological suspense thriller. In the film Mohanlal is Mithun Madhavan, a Mumbai based Information technology industrialist. Priyan, a software engineer, is the favorite staff of Mithun Madhavan, who is in love with his uncle's daughter Dhwani.

Dhwani, on the other hand, born and brought up in Chennai, is a stubborn girl who won't care for anything. She knows little about the culture, traditions and even her relatives in Kerala. She being the sole heir of Kalarithodi Tharavaadu, is brought to her ancestral home, when her mother dies of cancer. Her grandfather, who is only person left in the Tharavadu, cares very much for her and asks her to be with him in Kerala for the time being. After some problems in her life, that is becoming grave day after day, It is at this juncture that Mithun comes into her life, on a vacation visit to Kerala. He was introduced to Dhwani by his sister who is a close friend of her, following which everything changes in both of their lives. 

Flash have Mohanlal as Mithun Madhavan while notebook fame  Parvathy is Dhwany. Jagathy Sreekumar plays a major role in the film as Mithun's close friend called Idea Sasi, because he is all the time coming up with ideas, all of which are impractical. Tamil actor Ponvannan also plays a meaty role in the film. The others in the cast include Shamna Kasim, Siddhique, Indrajith, Saikumar, Sureshkrisna and Suraj Venjaaramodu.

The film, which was shot at Kannoor, Kanjangad, Kozhikode and Changanacherry is slated for release by Mulakupadom Films on December 20, 2007 as a Christmas release.