Mason is unusually cold toward Mandy, who wants time alone after taking blame for a problem. Their strained interaction hints at a deeper conflict. Suddenly, a new lecturer, Sean Mitchell, arrives to replace Prof. Bell and immediately announces he'll protect his sister Vivian from bullying, warning that anyone who harms her will face consequences—even if they're a Carter. Mandy recognizes Sean as a feared soldier known as 'the butcher' and worries about his lethal reputation. As Sean’s intense presence unsettles everyone, Mandy faces the looming threat of confrontation, unsure if Sean’s killing intent is aimed at her.