It's the last day before half term, and a sponsored bike ride is in the offing - but Annie and Emma can't find their partner in chrome, Tanya. They give a radio broadcast about their recycling aims, but Tanya's absence makes it less effective. Togger, who considers the whole thing a race, immediately turns around the race signs (in time-honoured Grange Hill style!) to confuse the opposition. There's also the matter of the French Exchange kids arriving. As the bike ride starts, it becomes evident that Tanya has other plans: she's all dressed up to meet Jean on an unofficial stop. Chloe shows her sponsorship form to Sammy - just 3 sponsors doesn't seem too impressive. Maddie catches Taylor chatting up yet another girl and tells Karen. Baz has to fetch his father's medicine, and is once again late for swimming, facing Mr. Malachay's wrath. Early in the bike race, Chloe comes off her bike with a bad leg, and Mr. Fox suggests that Sammy does the race on her behalf. Togger and Andy notice ...