花木兰是家中的长女，性格爽朗率真，父母极力想帮女儿找到一个好归宿，可是多次努力未果。此时却收到了北方匈奴侵略的消息，朝廷召集各家各户的壮丁。木兰父亲也在名单之内，木兰不忍年迈残疾的父亲征战沙场，决定割掉长发，偷走父亲的盔甲，决定女扮男装代父从军。花家的祖先为了保护木兰，便派出了心地善良的木须从旁帮忙。从军的过程中，木兰凭着坚强意志，通过了一关又一关的艰苦训练，她的精神也感动了所有战友。就在战况告急的时候，她也被发现了女子的身份。她被遗留在雪地中，而最后也是她的及时出现，顺利协助大军击退了匈奴。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.
