In this fabumouse adventure, the Thea Sisters head to Alaska, where theyre attending a conference held by an important ecological association. Their host and his family are native Alaskans who show the mouselings theirfavourite games and activities. But soon theres troublethe Thea Sisters discover that someone is upsetting the ecosystem by blowing up the ice with explosives!Can the Thea Sisters figure out whats going on and stop the destruction before its too late?