Jack Easy, a young man of radical egalitarian beliefs, enters the British Royal Navy and must reconcile his idealistic philosophy with the rigid hierarchy of naval life. Driven by a desire to prove his mettle, Jack navigates the complex social and professional structures of the midshipman's berth. He faces opposition from traditionalist officers and the harsh realities of maritime warfare during the Napoleonic era. The narrative follows his development from an impulsive youth into a capable officer, utilizing a third-person perspective that balances humor with technical naval detail.

Readers frequently highlight the balance between the protagonist's humorous, often reckless personality and the serious backdrop of naval warfare. Discussion often centers on the author's ability to blend authentic historical detail with a lighthearted, picaresque tone that distinguishes the work from more somber maritime literature. Critics often point to the influence of Marryat's own naval service on the realism of the midshipman's daily life. The work is widely recognized for its contribution to the development of the sea story genre, with many readers appreciating the wit and pacing that keep the narrative engaging despite its age.