The documentary 'Inside The Manosphere' features influencer HSTikkyTokky, whose real name is Harrison Sullivan, exploring the extreme masculinity prevalent in online spaces that often promote misguided and toxic views on manhood. Theroux takes viewers through the complexities of Sullivan's life, highlighting not only his controversial coaching methods aimed at young men on self-reliance and financial independence but also his recent run-ins with the law, including a high-speed supercar crash that almost led to a jail sentence.

Theroux brings a critical lens to the world of influencers, in which Sullivan has built a significant platform by teaching financial independence, positioning himself as a mentor for many young followers. However, this success is marred by cautionary tales, including warnings from the Financial Conduct Authority against his financial services, illustrating the risk that young men may face when drawing inspiration from dubious sources.

The film does not shy away from the underlying issues in the 'manosphere'—a space often associated with negative stereotypes around masculinity and responsibility. Through the portrayal of Sullivan and his environment, Theroux underscores the potential consequences of unchecked influencer culture and the importance of scrutinizing the narratives that are often celebrated in the quest for male empowerment.