Aqours vs μ's

The members of Aqours have been preparing for an upcoming event for their school, however, things take a turn when some members in the otherworld and the members of the counter world get mixed up...Guess I should say literally. Maybe ^^

How will they fix this mess? Who's affected? Will they be in danger? Or will they be a danger to themselves?

This is the second book of the Love Live VS series.