When Darlene and Jacob Sterling died in a tragic house fire days after having their second daughter Penelope, their teenage daughter Harper was left with a hard choice. Allow her infant sister to go to a foster home or step up and raise her herself. She chose the second. Now faced with the responsibility of raising a baby while still in high school, will Harper be able to make it work? Or will she end up losing the only family she has left? #BigSisterChallengeSortOf #BigSisterChallenge