Hero No. Zero 2 is the Hindi dubbed version of the Tamil comedy movie All in All Azhagu Raja. The storyline of the Hindi dubbed movie centralizes on the characters Azhagu Raja and Priya who hate each other and keep fighting constantly. Raja owns a cable channel and is successful in his career and personal life, whereas Priya fails at everything. But soon the two become friends and their friendship gets deeper with each passing day. Soon, their friendship turns into love, and the two decide to get married and spend the rest of their lives together. But unknown to them, this is just the beginning of the obstacles in their love story. As it turns out, their families do not like each other and have a history of unresolved issues. Their love is not acceptable to both their families, leave alone the decision of getting married.