 While searching for a way to defeat Cheng in the Book of the Iron Fist, Danny discovers that his assistant, Nadine, is an accomplice to Cheng, after she poisons his coffee.Cheng is seeking the retrieve the heart of the Iron Fist in order to enter K'un-Lun and devour the egg that births the next Shou-Lao the Undying every generation, thus wiping out K'un Lun's Iron Fist legacy.Iron Fist manages to defeat Cheng even in his weakened state.