Immune is immunology presented as a working conversation. It is not flattened into wellness language, and it is not sealed inside specialist shorthand. The show moves between journal-club discussions and Immune Booster interviews, using both formats to show how immune science is argued through evidence. One episode can linger on aged mice, B cells, and what animal lifespan comparisons can and cannot say about human aging. Another can turn tattoos into a discussion of dermal pigment, macrophages, lymphatic drainage, and how immune cells respond to materials placed under the skin. The questions stay concrete. What happens when the newborn immune system meets microbes for the first time? How might early-life microbiome exposure leave long-term effects? Why does the pregnant uterus need immune restraint, and what risks appear when pathogens exploit that balance? The show also has room for lived experience. A vaccine-hesitancy conversation follows fear, measles, SSPE, trust in a pediatrician, and the difficult process of changing one's mind without turning the story into a scolding. The Booster interviews give scientists space to explain where their curiosity came from, including video games, difficult classes, family illness, clinical training, conference encounters, and the first thrill of laboratory work. Panel episodes are more brisk and social. They sound like researchers thinking in real time, correcting details, testing analogies, and laughing at odd phrases such as aged mice while still taking the paper seriously. The technical vocabulary is real: microbiota, lymph nodes, placental infection, NKT cells, HIV vaccine work, sex differences, Listeria, parasites, skin, gut, and lung. Yet the rhythm keeps returning to why the immune system matters in bodies, families, clinics, and public health. Immune is best for listeners who like science with mechanisms, caveats, and personalities intact. It rewards curiosity, patience, and a taste for the unsettled edge of biology.