Emma frustrates her ex-husband by chasing a mouse herself, causing a mess and concern. He tries to initiate intimacy, but she refuses, citing illness, while suspecting he's visiting another woman named Jessica. Later, Emma confronts her lingering feelings and reaches out to a former colleague, asking for help to reconnect with a professor and return to research. The episode ends with Emma preparing for a new start, reflecting on the seven years since their relationship began and facing unresolved emotions about her ex's betrayal and her uncertain future.