Esmie is really excited that her dad is getting on so well with Lizzie, his new girlfriend. Lizzie is so nice Esmie sometimes even forgets about her real mother, who died when she was a baby. But then Lizzie starts behaving strangely - saying she's at work when she's not. Esmie plotted for so long to bring her dad and Lizzie together. Could she be about to lose her second mum - before she's even got to know her?