The princess of the atom

The narrator, Frank Ferrule, recounts how his sister Dianne's mysterious disappearance and sudden return triggers an extraordinary collision between ordinary life and atomic-scale menace. Her uncanny connection to a microscopic realm brings towering intruders to the coast and draws the family into conflicts with an ambitious alien antagonist named Togaro. Brothers Frank and Drake undertake perilous ventures, including a shrinking journey into cellular caverns, to forestall invasion, protect unsuspecting worlds, and resolve personal tensions stirred by love and rivalry. The narrative combines speculative atomic science with adventure and battles that span extremes of size and consequence.