Kinji and Wanibe are transferred to a dangerous exploration team. Wanibe is injured so Kinji is forced to do his share of the work while also having his pay reduced. This leaves him with no money as he must still feed Rim. A swarm of monster ants overruns the mine and to survive Kinji uses a transformation potion to turn himself, an elite warrior and an equipment manager into ants but ends up trapped when their boss seals the mine. Kinji realizes while transformed he can understand the ants language and introduces the concept of workers’ rights to the worker ants, forming a union to demand the Ant Queen treat them better...