Prior to their trip, biologist Hinano Kurahashi helps Nagisa, Sugino and Hiroto Maehara hunt for bugs, while pervert Taiga Okajima shows them his own trap laid out for Koro-sensei using a pile of porn magazines. However, Kurahashi becomes fascinated when Koro-sensei spots a rare stag beetle worth a ton of yen. Later, Lovro is called in to help train the students for their island assassination, taking interest in the two top marksmen of the class, Ryūnosuke Chiba and Rinka Hayami. After telling Nagisa about the world's most infamous assassin known only as The Reaper, Lovro decides to teach Nagisa a surefire assassination technique. The students of Class 3-E soon arrive at their island resort, making all the necessary preparations for their assassination. After having dinner, during which Koro-sensei inadvertently uses up his emergency shedding technique to get rid of sunburn, the class begin their assassination attempt aboard an on-sea chapel.