Set against the backdrop of a bitter, lifelong rivalry between two neighboring families, Pat and Pran have been pitted against each other since birth. Their parents compete in everything from business to academics, forcing the boys into a perpetual cycle of hostility. However, tired of the endless petty warfare, Pat and Pran secretly forge a truce and eventually develop a deep, romantic bond in secret. As their relationship deepens, the couple must navigate the treacherous waters of keeping their romance hidden from their fiercely opposed families and tight-knit peer groups. The series explores themes of generational grudges, societal expectations, and the courage it takes to choose love over inherited hatred. Through witty banter, emotional vulnerability, and undeniable chemistry, Bad Buddy redefines the classic enemies-to-lovers trope in Asian television.