Paanch 5 Wrong Make A Right

The Dean motivates Gauri to win the race in the sports meet. Roshni vows to defeat Gauri in the race. Gauti informs Gauri about Roshni’s plan. Later, Nihaal, Gauri, Zara and Roy plan another move to attack Roshni. Roshni learns about it and manages to avert the accident. How does Roshni learn about Gauri’s plan?