Years Ago, Five sisters were swept away from their home due to a new rule about Bending abilities. That rule explained that if every bending ability was in the same vicinity it would cause catastrophe. Irene, Seulgi, Wendy, Joy and especially the young Yeri were immediately told to escape home without explanation. Taking care of their newly born baby sister, Irene and the others tried their best to tell her about their parents and why they weren’t around. Through their journey they discovered the real reason of the rule and how it was all a trick for the ruler named Kuvira to regain control of the world, that needed their Baby sisters air bending abilities to make happen. The four other sisters rescued their sister and went up against Kuvira learning that she has somehow became the dark avatar. Being able to bend all the elements, Kuvira put the sisters up against their weaknesses and even showed Seulgi how deadly her lightning abilities were by badly injuring Wendy and even Yeri in front of her. Seeing Seulgi in despair and her sisters on the ground gave Irene enough anger to release a vortex of flame that engulfed Kuvira until she collapsed of no oxygen. the sisters turned out ok and the all went home after a long journey.

Getting home by ferry they ran into their extended family, met their other aunts and uncles and even learned their old childhood friends were actually their cousins. They lived happily ever after with their family and were proud that they got to spend time as a real family after so may years, especially Yeri who never experienced a family since she was born was finally able to feel like she’s loved.

But one questions remains for the five sisters that comes into their mind after they say good night to Aunt Taeyeon and Uncle Leetuek. after shutting their bedrooms doors and climbing in bed, a question always finds its way into their mind preventing sleep.

“Where Are Their Parents?”