Poison Master Hikaru Gero is about to take on his most challenging assignment yet--getting married! Gero couldn't be more clueless when it comes to dating, but thankfully, marriage swindler Mei Kinosaki knows everything there is to know about love. Together, this unlikely pair is going to do whatever it takes to get Gero hitched--even if they have to take on the entire criminal underworld in the process!

Himekawa has made quite the name for herself as an international art thief, but when she suddenly finds herself in need of a partner in crime, Hamster Master Arashiyama is just the girl for the job! While it's not the partnership Gero expected to find in his quest for marriage, that won't stop this new dynamic duo from taking the criminal underworld by storm!