If I'm not mistaken the webtoon ends with them kinda teleporting to save the missing team that went on a mission to destroy an enemy research center of some kind. It's somewhere between the 78-90 chapter but I don't know exactly where. BUT... the 78 chapter is where the MC finds out about the missing team from Chohong and is preparing to save them. So I think is a good place to start reading the novel. I hope it was helpful!