Thappana has been scripted by M Sindhuraj whose last outing was for 'Elsamma enna aankutty' with laljose which was a clean entertainer and enjoyed good collections.
Mammootty is playing Samson a local petty thief, who is out from jail. On his journey back, he meets a girl named Mallika who is also a convict coming out of jail. He decided to help her on his way back and he lands in her village. From day one onwards he speaks for her and lands in continuous trouble.
Charmee plays the character of Mallika. This will be her third outing in Mlayalama after Kaattuchempakam and Aagathan. Murali Gopi is the baddie in the film.