No one ever suspected Jc Caylen had 4 siblings. Everyone thought It was just Jaylyn, Joe Felix, and Ava-Grace, but that's not every one. When Jc was born, he had a twin sister. By the name of Jaycie. He didn't like having a sister he had to share everything with so he despised her. She was kept secret to Jc's YouTube viewers or 'fans' for a long time until he figured his fans deserved to know the truth about his family.
Shortly after the reveal, Jc had left Texas and moved to Los Angeles to pursue his YouTube career and to join a channel called Our2ndLife.
Jc and Jaycie eventually reunite and all the drama between them is resolved. She is eventually faced with some difficulties and Jc offers to take her in to live with him and his 2 house mates, Kian Lawley and Joseph Hernandez.
Some unfortunate events happen before Jc and Jaycie's birthday party at the new house and she suddenly disappears with no one noticing at first. Kian realizes she's gone and sets out to find her and bring her home.