Housefull 4 is a period action romantic comedy and the fourth installment in the Housefull series is based on the theme of reincarnation. This time the tale revolves around 6 lovers who are separated in their previous lives in the era of 1419 because of an evil conspiracy and enemy attack. After 600 years they cross paths once again in 2019 wherein the present life the 3 men yet again fall in love with the same women but the pairs have changed and are about to marry their sisters-in-law. The situation takes them right back to where it all started 600 years back at Sitamgarh where the pairs reunite but not before a series of confusion and comedy of errors that delay the inevitable.