Abigail is the only child of her single father Henry. She is spoilt, very rich and gets whatever she wants. However, she hides the fact that shes rich. Moreover, she is being bullied at school because of her shy nature and awkwardness all in the name of staying low key. Many school terms pass and it is finally summer and Abigail goes to summer camp with her best friend Haley and other classmates. She encounters a shocking discovery - a camper who looks exactly like her. What happens when she finds out that she has a long lost twin sister, Ariel, in the same dormitory hall as her? What will they cook up with this new discovery? Double Trouble they say! Abigail discovers not only her sister but also her mother overnight...