When Captain Shang is mortally wounded by Shan Yu in battle, Mulan must travel to the Underworld, Diyu, in order to save him from certain death. But King Yama, the ruler of Diyu, is not willing to give Shang up easily.

"After a routine school field trip goes awry, Linc Baker is thrust into a world of intrigue and espionage, where a kid agent who looks exactly like him threatens to use powerful artifacts to control the world"--

In a world that is rapidly descending into chaos, Frey and Rafi are twin sisters, but few people know of Frey's existence, because she has been raised to be her sister's body double and lethal bodyguard, while Rafi has been raised to further the family's political power--but when their father sends Frey in her sister's place as collateral in a tricky deal, Col, the son of a rival leader, gets close enough to begin to suspect something, and Frey must...

When China is invaded by the Huns, Mulan decides that she must disguise herself as a male soldier to fight in place of her ill father, who has been called up for war.