Shackleton is an ordinary girl. She has no friends or enemies until, one day, she appoints herself captain of the ship Polaris and sets sail for the North Pole. Almost her entire class joins this dangerous voyage, and one adventure follows another. ...

Shackleton is an ordinary girl. She has no friends or enemies until, one day, she appoints herself captain of the ship Polaris and sets sail for the North Pole. Almost her entire class joins this dangerous voyage, and one adventure follows another. Only one girl refuses to play, even though she wants to join the expedition. Some start calling her Bear and turn her into a terrible enemy. Shackleton and her friends don’t know how to navigate these treacherous waters, and little by little, fantasy begins to eclipse reality…