Noah must leave her city, boyfriend, and friends to move into William Leister's mansion, the flashy and wealthy husband of her mother Rafaela. As a proud and independent 17 year old, Noah resists living in a mansion surrounded by luxury. However, it is there where she meets Nick, her new stepbrother, and the clash of their strong personalities becomes evident from the very beginning.

Set in Han Imperial China, the plot follows the adventures of enslaved girl Ping with ancient dragon Long Danzi. Dragons had been banished from the kingdom. Ping, an orphan, finds one of the last remaining dragon eggs. Palace guards force Ping to run away in order to return the dragon egg to the ocean and save all dragons from extinction. Ping discovers that she is a true Dragonkeeper.

In the final days of World War II, the Nazis attempt to use black magic to aid their dying cause. The Allies raid the camp where the ceremony is taking place, but not before they summon a baby demon who is rescued by Allied forces and dubbed "Hellboy". Sixty years later, Hellboy serves the cause of good rather than evil as an agent in the Bureau of Paranormal Research & Defense, along with Abe Sapien - a merman with psychic powers, and Liz Sherman - a woman with pyrokinesis, protecting America against dark forces.