 Another day starts on the Isle of Wight Field Trip. The girls are invited to the other school s barbecue, and the boys talk about gatecrashing it. Mandy explains the idea of the American prom to Gonch. Down on the beach, Trevor is drowning his sorrows, after the incident with Georgina. When he doesn t turn up later, Fiona and Robbie go looking for him - they just find a shoe. They report back to Miss Booth, and the coastguard is alerted. Meanwhile, out in the ocean, Trevor is struggling to stay afloat on an unstable large rubber ring. Gonch reveals his original homework plan to Mandy, who is offended that he wasn t interested in her for own sake. While there s no news about Trevor, Ziggy comforts Georgina who blames herself for Trevor s predicament. Out at sea, a rescue motorboat spots Trevor, and they pull him aboard. Miss Booth castigates Vince and Fiona for hiding Trevor s drunken behaviour. Ziggy, Robbie and Mauler have a hosepipe attack planned for the barbecue, but Mr. Mackenzie is on to them, and they end up soaking themselves. Mandy refuses outright to participate in the homework scheme, but suggests computer dating instead. Robbie isn t pleased to see Calley assert her independence by snogging one of the rival school kids. Helen has a heart to heart with Trevor who, ashamed by his rescue, promises to stay clear of the booze.