In the green sunlight of Uganda a minister's wife finds passion and truth in an affair. Fidelity is strained in the heated atmosphere that surrounds the expatriates who teach at the college in Kampala in the 1970s. Agnes's husband, John, tells her she can will herself to remain in love with him, but she doesn't think she can. Then an attractive new arrival with yellow hair-whom Agnes dubs her "Finn," though he turns out to be Polish-captures her imagination. The distance from Agnes's imagination to her heart is not far. The locals observe, sympathizing and despising. And looming over all is the imminent ascension to power of General Idi Amin.