Ko Joo-yeon

Meet the Fox family, a traveling circus troupe with a mythical, centuries-old secret. They are gumiho creatures, who can transform themselves into human beings after 1000 years, if they eat human. When a murder goes down, the Fox family is pinned as culprits.

Two rival police stations compete fiercely, even for the designation of Officer of the Year, until a high-profile case forces them to collaborate.