Annie Lau is a pre-made Sim from Midnight Hollow. She resides in Extraordinary Home, at 123 Poffald Place with her sisters, Mai and Lucy. Annie is the middle child.
After an experiment gone awry, the three sisters, who were trying to optimize the human body, were left with extremely fit physiques and the need for a new pupose in life. Indeed, when the game starts, each sister will become fit and may get a memory of losing weight, if Generations is installed. However, none of the sisters have any history of being employed in the science career track.
↑Despite their identical facial features and household biography implying them to be triplets, Annie is actually the middle child with 16 days away from becoming an adult. Mai and Lucy have respectively 10 and 19 days left in their young adult stage. It is not known whether this was an oversight or simply intended by the game developers.