Ginta and Team Mär visit the magical land of Kardia where their teammate Dorothy is from. There, they learn about Dorothy's past, how her family history is linked with that of Mär Heaven, and the dreadful task that Dorothy has sworn to fulfill.

Team Mär may be facing the beginning of the end when the Chess Pieces kidnap Princess Snow and take her to Queen Diana. Somehow, Team Mär must remain undaunted if they hope to persevere against the Chess Pieces. And, what fate awaits Princess Snow at her evil stepmother's hand?