Nine year old William admits that he is a worrier - but by writing down everything that happens in his life, we get a candid glimpse into how he thinks and feels. Worried William documents his life over a short period as he shares what makes him stressed, what makes him worry, and ultimately what makes him smile. From school day angst to the upcoming Halloween Disco and his nervousness around new friend Marlee, we learn what's important to him and why. Injected with feeling, humour and hashtags, Worried William gives a unique insight into what really makes a nine year old boy tick.