Young RiverClan medicine cat apprentice Frostpaw is desperate to guide her Clanmates down the right path—which isn’t easy when Tigerstar seems to be watching their every move. Within ShadowClan and ThunderClan, rifts are opening between once-loyal Clanmates as the changes to the Code stretch tempers to the tipping point. As tensions heighten and old grudges take new hold, one wrong move could prove that peace among the Clans can never last for long.