With the help of immunologist Professor Katie Ewer and virologist Professor Ravi Gupta, Professor Jonathan Van-Tam reveals the inner workings of the virus by blowing it up and inviting the audience to take part in a heist mission. Can they hijack our cell machinery to replicate? Up against the virus is our immune system, designed to fight back. We also dive into a nose to uncover the wonders of snot and whittle down the winner of a game of antibody bingo to crack how our immune system can defeat this invisible enemy.