And the third episode that has been kept under wraps brings together the real-life brothers Sunny and Bobby.
Karnik and Bobby teamed up for 'Nanhe Jaisalmer'. But this is Karnik's first film with Sunny.
However, from the sensitive 'Life Mein Kabhie Kabhiee' to the hard-hitting 'Darna Zaroori Hai' to 'Salaam-e-Ishq' - the films telling various segmented stories in an assorted bouquet - have crashed unceremoniously.
The only episodic film that did well at the box office is 'Life... In a Metro'.
Preity is positive about 'Heroes' and said: 'You watch, 'Heroes' will change the course of episodic films. I've just 20 minutes of playing time with Salman. But whatever we have, we had a blast shooting it.'