The Harrisons are a large, extremely close family, but beneath the apparently idyllic surface lie tensions and undercurrents in each of the three generations. Grandmother, Pamela, is struggling to cope with widowhood; her children Peter, Charlie, Elizabeth and Cassie all have their own private joys and troubles to deal with; so it rather escapes their notice that the grandchildren, now in their late teens, are entering a new, and potentially troublesome phase.
Roland is much too focussed on looking after his underconfident mother, Elizabeth, to concentrate on his own confusion over his sexuality; Clem is infuriated by her overprotective but loving parents after a brush with anorexia, and desperately misses her twin, Maisie, who is adventuring abroad; and 17-year-old Ed has discovered girls in a big way, and one in particular, which is where the trouble really starts . . .