Assassination Classroom-Season 2 Part 1

Class 3E is about to begin their second semester! And while some things have changed, the class assignment is still the same: kill their teacher before the end of the year! Easier said than done since Koro Sensei's made it clear he won't go down without a fight. Will these students be able to take down the tentacled monster that moves at Mach20 before he can destroy the world?