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.