After another bitterly cold leafbear comes to an end, everything is going normaly in the warrior cat Clans.... Until a cat of ThunderClan named Blazecall gets bitten by a rat with white foamy drool, Blazecall is fine for about five days.... Then he changes. He gets nausious, he vomits, and the worst symptom, atacking other cats! Worst part is Alderheart, and Jayfeather have no idea what the cure is, or what the sickness even is called. Find out how ThunderClan pushes through this vicious plauge.... (WARNING: THIS BOOK TAKES PLACE AFTER THE VISION OF SHADOWS ARK IN THE ORIGINAL WARRIORS SERIES, SO THERE ARE SPOILERS AHEAD, IVE ONLY READ THE FIRST TWO BOOKS IN VISION OF SHADOWS, SO I MAKE ASSUMTIONS ON HOW IT ENDED, BUT I REALLY DON'T KNOW HOW IT ENDED, JUST WHAT THE PLOT IS. SO PLEASE BEWARE OF SPOILERS, AND DON'T SAY I DIDN'T WARN YOU ABOUT THEM. READER DISCRESSION IS ADVISED).