The 10th Kingdom (2000)

S1E4 Part 4

The coronation of Prince Wendell is abruptly called off because he is missing, unaware to his subjects that he remains stuck in the form of a dog alongside Virginia and Tony Lewis. Meanwhile, an imposter claiming to be Prince Wendell steps forward to take the throne, while the Evil Queen's minions pursue the real Wendell into the depths of the forest. To make matters worse, the magical mirror essential for their return to New York has been destroyed.