Kat has lived in the mountain her entire life. Going outside is allowed only to a select few, many of which never return, including her brother Ned. She doesn't want to believe he might be dead and tries every night to contact him via the coms. Silence is the only response. Desperate to find an answer to his disappearance, Kat steals a snow cat and searches for her brother, putting the safety of everyone in jeopardy. She's joined by a cat who,...