A new guard has come to Building 13. It’s Hajime Sugoroku’s brother(?), Hitoshi Sugoroku. This takes Hajime by surprise and he tries to lecture Hitoshi to go home, but he has already been hired. Meanwhile, Uno and Rock starts doubting Hitoshi, who can pull off a woman’s guard clothes nicely, is actually a gorilla’s... or Hajime’s brother. To find out the truth, the 2 announce the beginning of Cell 13’s customary game of tag.

Finally, the annual Battle Cup has started! Ace, along with all the other Dragon Callers, are eager to show off their strengths in the tournament. However, Ace's opponent for the first match is... Tiger! Does Ace stand a chance against him?

Except for the monster, life in the mansion is pretty sweet. Using the knowledge gained from the library, the four friends become completely self-sufficient. There’s even a TV in the living room. Eventually, they get quite used to their life and begin thinking they don’t need to escape after all. And in the blink of an eye, 70 years pass...

Since Nana damaged Mariko's vectors, she is unable to use them and is taken to a place to be watched over. Kurama tells Nana that he must kill Mariko. Lucy goes to see Kohta and apologizes for making him feel sad so many times.