タツミ隊長が行方不明に！？ ナースデッセイ号艦内に残された謎の痕跡。怪しい人影。
これは事件の匂いだ！！――と張り切るマルゥルと、事態に困惑する隊員たち。マルゥル探偵の”迷“推理が冴えわたる！！
メトロン星人の名にかけて！！
Captain Tatsumi is missing?! Mysterious clues are found left in the Nursedessei... and there is a suspicious shadow. It smells like a mystery - so thinks Marluru, while the crew is left baffled. Maruluru shows off his detective skills! "In the name of Alien Metron"!!
