Ranpo, the world’s greatest detective, is not so capable when it comes to every day tasks. Asked to buy gifts to celebrate a successfully completed major job, Ranpo is at a loss as he is unable to use public transport alone and finds everyday tasks impossible. He needs to buy gifts for Dazai, Atsushi, Kunikida, Yosano, Kyoka, Kenji and Jun’ichiro. Needing to buy gifts for the other Detective Agency members, he doesn’t know where to start. He insists you help him.