An illness is spreading through the progressive and painstakingly accepting Eureka Day School - and it's more than the mumps. When the outbreak threatens to become an epidemic, it's a race to see what will destroy this community first: the disease or each other. Despite the safe-space mentality, gluten-free scones from the local bakery, and open marriages that have moved beyond monogamy, secrets and lies still run rampant and childhood vaccinations ignite fury. An explosive comedy that skewers sanctimony and the nature of our politics, Eureka Day asks, "when does us become them?"