To save her father from death in the army, a young maiden secretly goes in his place and becomes one of China's greatest heroines in the process. This retelling of the old Chinese folktale is about the story of a young Chinese maiden who learns that her weakened and lame father is to be called up into the army in order to fight the invading Huns. Knowing that he would never survive the rigours of war in his state, she decides to disguise herself and join in his place. Unknown to her, her ancestors are aware of this and to prevent it, they order a tiny disgraced dragon, Mushu to join her in order to force her to abandon her plan. He agrees, but when he meets Mulan, he learns that she cannot be dissuaded and so decides to help her in the perilous times ahead.

After a long journey, a father with two children comes to a country house. Restless and impatient children, leaving their father, begin to play "war", running around the neighborhood. Keen in their game, shooting and dodging imaginary bullets, they encounter the remains of an old armored tank. Worried, they run to explore the tank, which is in the place where a fierce battle was once fought. Suddenly, a series of strange events are taking place, and children see with their own eyes that a real war was really going on here ...

Set during the opening days of World War II on the Eastern Front. Its main cast are a group of Soviet teenagers with extraordinary abilities; the teenagers have been drafted to form a special unit to fight the invading German army. They are opposed by a Schutzstaffel (SS) officer who is attempting to raise from the dead a supernatural army of crusaders from the 12th-century Order of the Sacred Cross and enlist them in the Nazi cause.