Nina, is a Grounder that has been cooped up in a cave since she was a baby. Her Mother died giving birth to her and her Father died in war, her fellow grounders resented her and called her the bad omen of her tribe. Her brother, Lincoln made a deal with his leader if he keeps Nina away from them than they will leave her alone. 17 years later and she knows nothing of the outside world except for what she learned in the cave, she only saw whatever was in front of the opening of her home. Her world drastically change after Lincoln brings home Octavia one of the sky people and her brother takes revenge on them for his. See what happens next in "The Shy Grounder".