Molly examines her shelf of special things at the back of Mack's Stall. She chooses the lock of purple hair and remembers the day she got it. Caitlin wants to play with her granny, but Moira is too busy. Later at Alice's stall, Magnus is buying a 'World's Greatest Granny' mug and tells Caitlin how fun and cool his granny is - she has purple hair. Moira overhears this but walks away before hearing Caitlin say that her granny is the greatest granny too. At the Wobbly Coffee Pot, Mrs Juniper is getting Bob, Sandy and Magnus to help her make a new display. Moira tells Kez she'd like to be a cooler granny, and Kez offers to give Moira a makeover. Then, Moira goes off to show Caitlin her new outfit and purple hair. Moira arrives at Kids Club, but to her surprise, Caitlin - who's busy making a top secret gift for her granny - seems unimpressed by Moira's new look. The kids go to the cafe, where Mrs Juniper is pleased with her new display. Moira arrives, and trying to be fun, throws a ball to Caitlin. It misses and knocks over the display. Caitlin is upset and runs to the Kids Club. Moira apologises to Caitlin, who shows Moira what she was making earlier - a badge that says 'Caitlin's Greatest Granny'.