When the Sea Turned to Silver

The Emperor's soldiers attack Pinmei’s village and kidnap her grandmother, which cause Pinmei and Yishan to begin their jouney in search of a Luminous Stone to exchange for her release.

KaiJae gives Pinmei and Yishan the Paper of Answers, but it isn't until after they are caught attempting to steal the Luminous Stone that the Paper holds the key to rescuing grandmother and the Black Turtle, as well as defeating the Emperor.