Set in near-future Berlin, THE HAPPINESS ENGINE follows Zoe Malkovich, a Ukrainian-Canadian immigrant who has carefully built a successful life inside Germany’s elite tech world. Recently promoted to Chief of Staff at GAIETY, a fast-rising startup developing revolutionary AI-powered emotional technology, Zoe believes she has finally achieved stability, status, and belonging after years of reinvention.

GAIETY’s flagship product, GAIETY Air, promises to eliminate depression, anxiety, and emotional suffering by engineering continuous happiness through immersive neuro-responsive technology. Led by charismatic founder Regina Koenig, a former Harvard-trained psychiatrist turned celebrated tech visionary, the company positions itself as humanity’s next evolutionary step. Investors and media alike hail the product as a breakthrough capable of transforming mental health worldwide.

Yet during the company’s final launch preparations, Zoe begins to feel unsettled by the increasingly cult-like atmosphere surrounding GAIETY and Regina’s growing rhetoric about controlling human emotional states. At the same time, Zoe’s personal life begins to fracture. Her marriage to Rafael von Schwarzburg, a rising artist from an aristocratic German family, deteriorates after he proposes opening their relationship and becomes increasingly entangled with his longtime friend, the celebrated pianist Amalia von Braunschweig. As Zoe struggles with betrayal, loss, and questions of intimacy, she is supported by her closest friend Leonie Klarheit, a queer fashion designer whose unconventional approach to relationships, sexuality, and personal freedom challenges many of Zoe's assumptions about love, belonging, and self-worth.

Leonie becomes an important source of grounding and perspective as Zoe navigates both her crumbling marriage and growing doubts about the world she has built around herself. Through their conversations, Zoe is repeatedly confronted with alternative visions of happiness and fulfillment that stand in sharp contrast to the rigid success narratives embodied by both GAIETY and her marriage.

At the same time, Zoe develops a deep intellectual and emotional connection with GAIETY's introverted CTO, Adam Esh, whose quiet moral seriousness contrasts sharply with Regina's seductive ambition. Through conversations about spirituality, freedom, technology, and the commodification of wellness culture, Adam gradually awakens Zoe's awareness of how thoroughly she has silenced her own instincts in exchange for acceptance and success.

As launch day approaches, Zoe discovers that Regina secretly altered GAIETY Air’s core design. What was originally developed as a therapeutic support system has been transformed into a mechanism capable of creating emotional dependency by artificially preventing users from experiencing negative emotional states. Internal systems are engineered to reward continuous usage while subtly punishing emotional disengagement, effectively turning happiness itself into a behavioral addiction.

Horrified, Zoe confronts Regina directly. Regina defends the system as a necessary intervention for humanity, arguing that people are incapable of managing freedom responsibly and that engineered happiness is a form of benevolent stewardship. Beneath Regina’s utopian rhetoric, Zoe recognizes a deeper desire for control disguised as compassion.

As tensions escalate within GAIETY, Adam and Zoe work together to resist Regina’s efforts to push the product toward large-scale emotional manipulation. Zoe gradually realizes that the same patterns of control and self-erasure exist throughout her life: in her marriage, in corporate culture, in wellness industries, and even within her own desperate attempts to become acceptable to others.

Following the collapse of her marriage and GAIETY’s internal crisis, Zoe undergoes a profound personal transformation. Rather than pursuing perfection, certainty, or engineered happiness, she embraces a more uncertain but authentic way of living grounded in self-awareness, freedom, and emotional honesty. She reconnects with her own body, her spiritual practices, and her capacity for meaningful human connection. In the process, she rejects the fantasy that happiness can be manufactured, optimized, or permanently secured through technology or external validation.

THE HAPPINESS ENGINE is a literary speculative novel exploring emotional capitalism, technological utopianism, contemporary loneliness, migration, female ambition, spirituality, and the human desire to escape suffering. At its core, it asks whether happiness without freedom is still truly human.