When a mother of five goes on vacation, she leaves her brood in the care of a nanny who, to be honest, isn’t exactly the best choice. From day one, the elderly authority figure proves to be a tyrant, prompting the oldest sister, Christine, 17, to take charge of the situation. However, things get incredibly complicated when the nanny suddenly passes away. Instead of calling the police or their parents, Christine decides to take a more mature and bold approach: she pretends to be her own mother.
With a new look and plenty of confidence, Christine embarks on a series of adventures that include lying to her teachers, landing a job at a design agency, and even catching the interest of a handsome boy. But with her siblings causing chaos at home and the fear of being discovered lurking around every corner, Christine must balance her student life, a job, and the responsibility of taking care of her brothers and sisters. As the story progresses, comedic errors pile up; each lie leads to hilarious situations and moments of friendship and love that tug at the heartstrings. In this emotional rollercoaster, Christine not only learns to navigate her new life but also discovers the importance of family and doing the right thing when the going gets tough. A classic comedy that reminds us that growing up is no easy feat.