The Unexplored City of K'un-Lun

Thor takes Makoto, Chloe, and Adi on a visit to K'un Lun, where they meet the Immortal Iron Fist. Iron Fist agrees to train the kids in martial arts but Makoto is frustrated by the seeminly-pointless training exercises. Meanwhile, Thor receives a cryptic warning from the K'un Lun Elders about a dangerous looming threat, which only the Future Avengers may be able to stop.