The girls solve the theft of a jade ring from the school museum.

Step through the portal of the jade ring and witness its magic as it unites the same two lovers spanning several centuries. The historical fantasy begins in the great forest in the center of the world where the lovers vow to find each other in their next lives. The male spirit, pulled away to be reincarnated as Lu B?n, a desperate orphan, encounters a girl destined to be reborn as the beautiful daughter of a man who learns the ring's power and covets it for the prestige, wealth, and power it can bring him. Can Lu B?n remain faithful to his mantra, "Do good deeds always or suffer in your next life," or succumb to a power-hungry lord who strives to control him or the murderous warlord who tests his moral compass? Will he betray his beliefs, forfeiting his soulmate, wife, and family?