In the middle of the semi-apocalyptic Coronavirus epidemic, Sherlock gets sick. It's up to John to deal with it.

Several months after the events at Sherinford Island, Sherlock and John are back to solving crimes at 221B Baker street whilst John juggles parenthood. However, there is something much deeper and much more difficult to understand brewing in the flat. Love. As Sherlock begins to lose his grip on how to deal with matters of the heart and John gets in deep with a case that could prove fatal, the two best friends are to face something which has been the subject of Mrs Hudson's sneaky winks for years.