Orbit the space dog and Tuna the star cat are playing with Orbit's favourite red ball, but Orbit is bigger and faster than Tuna, which means he always wins. It's not fair! When Orbit won't let her have a go at shooting a goal, naughty Tuna uses her sharp claws to pop his ball! Astro needs Luna's help to make them friends again, but she's too busy arguing with her best friend Stella - they both want to dress up as a doctor, but there's only one costume. Something has to be done! Luckily Astro has an idea and with the help of some gold star stickers and special reward charts, soon everyone is enjoying play times.
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