Two friends love more than blood

The story is about two childhood friends, Harsh and Aayu, who find a hidden room in an abandoned building with a strange book. They read from it and are transported to a wondrous and unfamiliar world filled with strange creatures. Along the way, they make allies and face danger but ultimately discover the key to returning home. Their journey transforms them, and their bond grows stronger as they rely on each other for support and encouragement.