You already have the answer

A moment of triumph takes a scary turn: Jungkook, the youngest member, falls terribly ill. The Wings tour officially kicks off with a BANG in Seoul, Korea. Experience firsthand how BTS feeds off the energy of their fans while they tackle the numerous challenges put before them: the complications of long distance traveling, rehearsing in new venues, and tweaking their performances to perfection, all while still working on new music. Unfortunately, the grueling schedule takes a toll and the members are dealt a scare in Chile…