The new generation of F4 is back, though they aren't really trying to live up with their fathers' names. F4 is back with Song Sulli, So Luna, Yoon Krystal and Gu Rei Ah, girls of the next generation of the richest, of the rich. Follow their own path of will to take on the roads of challenges and problems ahead, including the will to survive and find what's missing in their own luxurious lives, love.