The series follows the adventures of Sarah, a very kind, polite seven-year-old girl, with big eyes, rosy cheeks and a green hat, and her best friend Duck, a Mallard. The central theme is the relationship between these two characters and the adventures they have together. CBeebies state that the show has two learning themes: 'Friendship and imagination' and 'Problem Solving'.

The series follows the adventures of Sarah, a very kind, polite seven-year-old girl, with big eyes, rosy cheeks and a green hat, and her best friend Duck, a Mallard. The central theme is the relationship between these two characters and the adventures they have together. CBeebies state that the show has two learning themes: 'Friendship and imagination' and 'Problem Solving'.

The series follows the adventures of Sarah, a very kind, polite seven-year-old girl, with big eyes, rosy cheeks and a green hat, and her best friend Duck, a Mallard. The central theme is the relationship between these two characters and the adventures they have together. CBeebies state that the show has two learning themes: 'Friendship and imagination' and 'Problem Solving'.