The twins were unaware of each other's existence until years later, at which point they decided to act as a single person, keeping a common diary and a set of rules defining their actions as "Hannah".
双胞胎并不知道彼此的存在，直至他们决定以一个人的身份保存一本普通的日记及一套以“汉娜”的名义定义她们行为的规则。