Gurukul - The mysterious twist in four lives

Welcome to Gurukul, the best college of India, Situated in Mumbai.
The beauty of Gurukul cannot be described in words. It looks like Maharaja's Palace. Its huge garden with lovely flora is one of the most beautiful things that can be found in Mumbai. India's best teachers teach here. Every kind of course is available at Gurukul. Halls, classrooms, corridors, cateens, libraries, gyms, everything is 'A1'.
Every year lakhs of students come here to study. In these lakhs, many pass and many fail, but they surely learn something new.
Four new students take admission in this college. They are from different backgrounds but they will meet each other.
They're not like other students, they're hiding something: maybe it's the mistery of their life. But why are they hiding something, especially when they're studying in Gurukul, the best but also the most strict college in India.
Maybe Gurukul has something that these four are looking for.
What was Gurukul hiding from the world?