Following the last episode, D.I.E. was officially disbanded, and all members returned to their previous positions. However, their quirky behaviors didn't change, and they continued to make fools of themselves at work. In order to gather this group of "worthless" people who can't be fired, the police decided to reorganize D.I.E.
Upon learning about the reformation of D.I.E., Crystal, who has become a mother, was extremely eager to join and even brought her newborn baby to work. A series of blunders ensued, and it was then that everyone realized the baby had the same extraordinary talent for investigation as his/her father.