Story of Kathir whose wayward lifestyle is a subject of ridicule in his neighborhood. While 7G Rainbow Colony (2004) chronicles the romance blooming between Kathir and Anitha, the film's sequel 7G Rainbow Colony 2 (2025) has another woman entering Kathir's life in the aftermath of Anitha's passing.
Kathir is a young underachiever who frequently vents his frustrations through public outbursts. When Anitha, a North Indian girl whose family has fallen on hard times, moves into his housing colony, he soon decides to pursue her with his love, but she keeps rejecting his advances.
Nearly 10 years post the tragic death of Anitha, Kathir's ailing mother makes desperate attempts to get him settled after sensing his attraction to the daughter of Flat No.7G's Newest Tenant.
