A massive influx of glacial melting triggers a new ice age in the Northern Hemisphere, forcing a family to make their way across the ice-covered landscape before they are frozen out for good.

Lena and her daughter move to a new town where she meets Michael, the man of her dreams. Little does she know he's hiding some very dark secrets. And after her new friends disappear one by one, Lena must unravel the mystery of her missing friends before it's too late.

When Rumpelstiltskin tries to take over Earth once and for all, The Avengers Grimm must track him down through time in order to defeat him.