Arikuttan and his misfit gang - Maniyan, Kanji, Moonga, and Althaf come from a slum in Thiruvanchipuram, dreaming of earning respect by sponsoring the local temple festival. But their journey of petty crime brings them small victories and heartbreaks. In 2018, an older Arikuttan hires a ghostwriter to rewrite his past. With biting dark humour, quirky rhythms, and a visually playful style, 4.5 Gang reimagines a gangster saga with wit, chaos, and raw emotion.