Dillagi is a 1978 romantic comedy directed by Basu Chatterjee, based on the Bengali novella "Kalidas O Chemistry" by Bimal Kar.

It stars Dharmendra as Swarn Kamal - a newly appointed Sanskrit professor in a girls' college.

Phoolrenu has been nicknamed "carbon dioxide" and Swarnkamal is lovingly called "jijaji" by the girls.

While for Swarnkamal it is love at first sight, Phoolrenu detests him due to his style of teaching the works of Mahakavi (Great Poet) Kalidas.

From the celebrations of the festival - Holi to the annual function, all attempts of Swarnkamal to win over Phoolrenu seem to be having an opposite effect.