Icy Silence tells of intrigues and changes in the wild world of the clans – and of the beginning of a rebellion. Finally, the Moon Lake has thawed – yet the StarClan remains silent. And Blackberrystar, the once kind ThunderClan leader, behaves strangely after recovering from an illness: he strictly controls his clan and even employs a spy to report any law violations. The clans are splitting into two groups: supporters and rebels.