Dako is a con woman. She stays at a suite in a luxury hotel and schemes to take money from vicious wealthy people like yakuza bosses and evil businessmen. She works with Boku-chan and Richard. Boku-chan is a sincere and timid young con man. Richard is a veteran con man.

Dako is able to master knowledge from various professions in a short period of time and disguises herself as someone working in that field. Along with Boku-chan and Richard, they carry their plans using fantastic teamwork.