Lovebugs, Hormone Monsters and a parade of other creatures juggle romance, workplace drama and their human clients’ needs in this “Big Mouth” spinoff.

A young girl inhabits an isolated island with her scientist father and communicates with a reclusive author of the novel she’s reading.

Ten-year-old Gabe was just a normal kid growing up in Manhattan until Rosemary Telesco walked into his life, actually into his karate class. But before Gabe can tell Rosemary how…