2019年，TOMORROW X TOGETHER凭借出道专辑，成为首支登上告示牌二百大专辑榜的韩国流行音乐组合，创下历史。自此，该组合成为第四代韩流领军者，深受全球喜爱与赞誉。尽管全球疫情影响，成员SOOBIN、YEONJUN、BEOMGYU、TAEHYUN和HUENINGKAI仍全员回归，开启从首尔至北美首场世界巡演。成员们虽感紧张，却勇于挑战自我，献上精彩表演，并亮相全球最大音乐节Lollapalooza，与世界各地歌迷共度温馨感人时光。

TXT, who deliver flawless performances on stage, transform into five rookie uncles for their childcare debut! From their first encounter with 14-month-old Yu Jun to the struggles of feeding, changing clothes, outings to the playground, and putting him down for a nap, nothing about this real-life parenting journey comes easy. Through their clumsy yet sincere efforts, the members reveal their unexpected goofy side and affectionate charm. Disarmed by the baby, the members' day blossoms into a childcare diary filled with laughter, relatability, and excitement. Watching these five uncles rely on one another as they grow through every unpredictable moment adds a whole new level of joy. Will TXT be able to navigate the chaos and create a special experience with Yu Jun?