Living in a tourist trap called Mystery Shack in Gravity Falls, Oregon, a young orphan girl named Lynn Paguio who always torn between working for his adoptive father, the owner of Mystery Shack, Stan Pines, and spending time with her entire friends, an apatosaurus named Arlo, a teenage spy Tuesday X, a timid pink dog Courage, a little girl Hannah Phillips, a pair of con artists Miguel and Tulio, and a white-haired boy named Lincoln. She always does entire tasks in the shack and babysits Stan's twin grand niblings, Dipper and Mabel Pines as she is happy with her life with the Pines family she was very protective of them while dreaming of becoming a famous soccer player along with her best friend, Shakes Mokena. One day, she came across a book of the multiverse with infinite pages to write, making her life a benefit for anyone in the case while facing a gang of villains threatening to take over the Mystery Shack as a domain.