The world Hikaru saved is already dead. What the OVA does is force her to watch the cost of victory play out across three episodes, separated from the friends who fought beside her, locked in a maze that keeps asking if saving the world was worth losing everything else. Lantis isn't a rescue, he's a reminder that some victories leave you more alone than you started. The magic system that felt triumphant in the TV series becomes a weight here, each spell a choice between staying alive and staying human.

Tokyo stands empty and lifeless, with the evil castle of Cephiro looming at its center after conquering the world. Before the ice witch Alcyone can take revenge on Hikaru, a young man named Lantis saves her, then seals her inside a magical maze where she must prove her power. Meanwhile, Cephiro's warlocks hunt her friends Umi and Fuu through the silent city. The two must find the sleeping Mashin, godlike beings that can fuse with the Magic Knights to become giant warriors of tremendous destructive force. Yet the three girls are untrained, frightened and alone, and whether even the Mashin can save them is far from certain. This three-episode fantasy mecha OVA with magical girl roots was later recut by director Toshihiro Hirano into a two-hour special edition with added scenes and altered dialogue.