Description Central International School's annual overnight lock-in event is legendary. Every year, students look forward to a night full of school sponsored activities with their friends, delicious food, and covert parties held in secret right under their teachers' noses. Bonds will be made, year-long goals will finally be met, and stories that will be passed down from student to student for years to come will have their origin---such is the reputation of the CIS lock-in. But when a group of students protesting the destruction of the planet's ecosystem chain themselves to the doors, locking everyone inside the school, the night threatens to turn from legendary to disastrous. With the teachers distracted and their exits blocked, can the students of CIS come together to save the most iconic night of their lives?