After being evicted, hardworking single mom Elaine Cheng tries to maintain a normal life for her children, Raymond and Tina. They squat in a Boston apartment as Elaine juggles a number of jobs, including working for a questionable pyramid scheme. When Elaine doesn't return home one night, nobody knows the kids are home alone, and they are left to fend for themselves. Raymond, a budding inventor, realizes he needs to come up with a plan to take care of his little sister.