Rosie’s excited as they set off for the annual summer holiday but things are not as she was expecting. In 2009 Si and Em are confronted with Fliss, their perfect new niece.

After the school notices some bruising on Rosie, Si becomes paranoid about a visit from social services. In 2008, Rosie takes her first steps leading to unforeseen new problems.

Rosie becomes obsessional about Christmas, unable to understand why it can’t be Christmas all the time. In 2007, Si and Em continue to drift apart and consider splitting up.

As Em gets excited about Si’s annual quiz, Rosie becomes fixated on making her draw a specific picture over and over again. In 2008, Rosie suffers a frightening medical emergency.

In 2007, Rosie has her first full evaluation, and in 2017, Rosie’s newfound communication skills are put to the test at her school sports day.