Bluey and Bingo are upset when their parents go out for the evening, leaving them with a babysitter they’ve never met named Mika. Determined to dislike her, the girls play tricks on Mika, but her kind and playful attitude wins them over. By the time Mum and Dad return, Bluey and Bingo are having so much fun with Mika that they don’t want her to leave, realizing that new experiences can be enjoyable after all.