Star Galaxy: The White Knight:

As unexpected strangers enter their lives, children in hiding quickly find themselves swept up in a whirlwind of increasing trouble. With the help of new companions and allies, the children discover their origins, strengthen bonds of fellowship, and journey to a faraway galaxy to find purpose and a home. Upon arrival, however, a galactic war that will determine the fate of their lives awaits them. Follow the story of four friends as they set off for an adventure of astronomical proportions ...