What is the main plot in the novel, They All Ran After the President’s Wife?

The main plot is that of Sandra trying to outwit her kidnapper; of nearly equal importance is the plot of Henry trying to sort through clues and deal with government idiots in an effort to find his wife. In addition, there are the subplots of Sandra's past as a public defender and the results of her case defending Sneakers Klint and of Jovunet's nonexistent hopes for freedom.