All Might explains the task to you and the class (class 1-A).

All Might: "So this festival, our class will be going against class 1-B. This is gonna different from the other festival we did. You might be confused but it’s not that hard actually.”

you all nod, and listen to him.

All Might: "You all need to either capture them or defeat them. you all will have 10 minutes to defeat the class. And use everything you got! Don’t hold back! This is your chance to show everyone what you can do!”