As Chang settles in to his new home – Greendale’s utility closet – & hopes to be promoted to “security guard detective, ” the study group prepares to make terrariums in Professor Kane’s biology class. But when Kane assigns each of them a random lab partner for the semester, they beg to be allowed to pair up with each other instead. Even though Kane grants their request, Pierce finds himself the odd man out in the group of seven & must work with classmate Todd. Meanwhile, Chang finds himself drawn into a noir-style mystery of his own making.