Trapped and on the run! Lucy and Dee are stranded in the magical world of Sericea with the young emperor Yidi as they flee his stepmother Xixi, the sorceress queen. Hiding their true identities to protect themselves, the group must make the hazardous trip across Sericea to the Caves of Wonder to find the White Tiger, a fabled warrior who could help them defeat Xixi. Dangers lurk around every corner, and Lucy, Dee, Yidi, and one small, smug dragon  must put aside their differences and face them together, or their lives and the fate of Sericea are at risk.