Dame Mary Berry knows a thing or two about cooking up a fantastic feast, so she's sharing her cooking skills with three novice cooks. Rima, her mother-in-law Diane and her best friend Noreen want to throw a spectacular surprise 30th birthday feast for Rima's husband Mark. They need Mary's help to give Mark a birthday surprise he'll never forget.Mary has also enlisted the help of Strictly's Janette Manrara and presenter Scarlett Moffatt. While Mary focuses on getting the novice cooks up to speed in the kitchen, Janette and Scarlett oversee the extras that make will make this party extra special. They are also on-hand to offer moral support when temperatures rise in the kitchen.Rima, Diane and Noreen have had their fair share of cooking disasters. Mark had to teach Rima how to boil pasta, Diane cooks from packets, and Noreen is known for leaving her family reeling with her crazily hot curries. So Mary has her work cut out turning them into cooks capable of serving up a fantastic feast. But it's a challenge she is willing to take on as it has been a tough few years for teacher Mark, and this party is about celebrating more than just a birthday.The recipes chosen by Mary for this feast include blinis, salmon en croute and a chocolate ganache cake. Meanwhile, Janette and Scarlett hit the shops to pick up Mark's favourite thing, cheese. Then it's time to step things up as they all head to the London Rowing Club on the banks of the River Thames to cook their fantastic feast and give Mark the surprise of a lifetime.