Captive Shadows

Saige is a bright girl, who was just accepted into Medical School. She couldn't be happier in life, until...
She wakes to find herself in unfamiliar surroundings and held captive against her will. But she isn't the only one. Over 30 teens and young adults from around the world have been thrown into sets of trials to prove their strength, wisdom and capacity. There are rules to be taught and punishments if they aren't followed.
Under constant surveillance and under strict orders, how far will these captives go to survive?
Their surroundings aren't all to be feared though, Shadows placed by their captor threaten to consume them all...

The main question remains, Why are they there?