"My precious offsprings, I won't let you get deceased."

Downpour. Lightning flashed. Thunder roared. There was a raging storm that night. Out of nowhere, twelve wild creatures came down on Earth separately. With all her strength, a spell was casted by their mother for them to be saved from their planet's destruction. Thus, they were sent to Earth and were saved but they happened to be wolves. Yes, wolves. They become human only at midnight until the time before the sun rises. They survived from the deterioration of their planet. But how are they going to break this spell? Will they be able to transform into humans permanently?