Baby Jessie's cot has been put in her big sister's room, who is not pleased, because Jessie will not go to sleep! The family try everything to soothe Jessie: Mum sings her a song and pats her on the back, Dad puts on the music box, but Jessie just won't stop crying. Jessie's big sister just doesn't know what to do ... until she realises that all Jessie needs is a very special cuddle.