Spiering argues that Harris's rapid political ascent outpaced her qualifications, leading to missteps and failures in key positions. He scrutinizes her time as San Francisco District Attorney and California Attorney General, highlighting perceived shortcomings and questionable decisions. Her tenure as Vice President, he suggests, is plagued by similar issues, portraying an administration struggling under her leadership.

The book frames Harris's career as a calculated climb to power, suggesting she prioritizes ambition over genuine conviction. Spiering examines her shifting policy positions and alliances, painting a picture of a politician willing to compromise principles for personal gain. This narrative seeks to undermine her public image as a progressive champion.

'Amateur Hour' aligns Harris with a far-left agenda, portraying her policies as extreme and detrimental to the country. This characterization plays into conservative anxieties about the Democratic party's direction. Spiering scrutinizes her voting record, public statements, and associations to build this case, attempting to discredit her in the eyes of moderate voters.