Angel Wars: About Face (2004)

Eli and Kira, two junior members of the Guardian Force must grow up in a hurry when their first mission to earth takes a detour, pitting them against Morg, a deadly but long forgotten foe. In a race against time, the Guardians must uncover the source of Morg's power, defeat his crafty minions, and stop the ruin of a mortal life, all while learning to work together.