Babysitting Us (a pjo fanfic) (Finished)

Leo made a machine. A time machine. That malfunctioned. 5 year old versions of Percy, Annabeth, Hazel, Frank, Piper, Leo, Jason, Travis, Connor, Thalia, Nico, Rachel, Octavian, Reyna, and Bianca appeared in CHB. The teenage versions have to face their greatest challenge yet, babysitting their younger selves until the...