With the protest shut down by police, Mu-jin and the workers regroup to form a union, vowing to fight to the end. However, when the university refuses to meet their demands, they have no choice but to go on strike. Just as the situation begins to look hopeful, they encounter unexpected backlash from students, prompting them to question the very cause for which they have been fighting.

Mu-jin encounters the restless spirit of Yoon-jae in a hospital and discovers that Yoon-jae collapsed because of exploitative working conditions at a foreign-owned supermarket. With Yoon-jae in a coma, Mu-jin seeks institutional support and tangible evidence of employer negligence and must also convince Yoon-jae's spirit not to surrender to despair.

When things look to be slowing down for Mu-jin and his team, a fire in a factory takes the lives of factory workers who all show up before him looking for help. As Mu-jin uncovers the extent of the factory's willful disregard for fire safety regulations, he realizes that the true source of the negligence lies with a more powerful entity, Myungeum Constructions. Determined to hold those truly accountable, Mu-jin seeks out the factory's figurehead for more answers.