‘look like the innocent flower, but be the serpent underneath it’
What would you do to save your people? For Rosie, it is to join the Nightbornes, fearsome creatures of the darkness. They are beings that dress in furs over scant clothing and wear animal skulls for masks.
Rosie is given a choice to be true to her birthright as a Sunwalker, vibrant creatures of the forest known to frolic in the woods in flowy clothing decorated with flowers or... embrace the delicious temptation of darkness with Thorne, ruler of the Nightbornes.