In preparation for the provisional license exam, UA's 10th grade students are participating in a simulated rescue, but the rescue has gone wrong and the students are now trapped in an underground shopping mall. As if the situation wasn't complicated enough, water starts seeping through the walls. The students have to get out of here as soon as possible. That said, Bakugo still takes the mission very seriously and refuses to go out without finding and evacuating the rescue dummy. The water is rising dangerously. Will they be able to evacuate and avoid the disaster?