The tree is decorated the cookies are baked and the presents are wrapped but the biggest celebration this Christmas is Gaby Summerhill's wedding. Since her husband died three years ago Gaby's four children have drifted apart each consumed by the turbulence of their own lives. They haven't celebrated Christmas together since their father's death but when Gaby announces that she's getting married - and that the groom will remain a secret until the wedding day - she may finally be able to bring them home for the holidays. But the wedding isn't the only surprise - there is one more unexpected gift and it could change all their lives for ever.