Sunny is the grandmaster’s daughter. She sweeps the floors, waters the plants, and practices with her nunchucks — sometimes she even makes mistakes! And she teaches other young students how to kihap (a spirited yell). When their kihaps grow loud and bold enough to shake the mountains, Sunny leads her friends in defending the dojang against two mythical tigers and a sapphire-colored dragon … or perhaps that’s just in their imaginations.