In this episode of The Story of..., Smith, Mike, and Camp tackle the immune system’s ultimate cheat code: vaccines. Ever wonder how your body learns to fight disease without signing up for the full-blown plague experience? Spoiler alert: it involves a lot of clever trickery and zero cow kissing (looking at you, Edward Jenner).

The gang also dives into the dramatic history of anti-vaccine movements, including 19th-century skeptics who thought vaccines would turn you into a human-cow hybrid (sadly, no super moo-powers). It’s science, history, and just the right amount of sarcasm—all delivered straight to your ears. Get ready to laugh and learn!