Maa Ka Sum Review | Mona Singh’s Latest Starts Strong But Loses Its Logic

There is something immediately engaging about Amazon Prime’s latest series Maa Ka Sum. On paper, it feels like a refreshing formula. A series that places mathematics at the centre of its storytelling while exploring relationships, parenting and emotional baggage is not something Hindi OTT attempts often. Directed by Nicholas Kharkongor and led by Mona Singh and Mihir Ahuja, the show sets up an idea that feels both relevant and ambitious.

For the first three episodes, it works.

The writing is tight, the pacing feels assured and the emotional world is clearly defined. You are drawn into the life of Agastya (Mihir Ahuja), a gifted mathematics student and his mother, Vinita (Mona Singh), a single parent navigating life after abandonment. Their relationship is easy, warm and believable. It avoids the usual dramatic tropes and instead leans into something more conversational and lived-in.

At its core, Maa Ka Sum is not just about numbers. It is about control—trying to apply logic to situations that are deeply emotional and unpredictable. That is where the show finds its strongest idea.

Agastya's belief that mathematics can solve real-life problems, including something as complex as finding the perfect partner for his mother, is both fascinating and slightly unsettling. What begins as concern gradually turns into obsession. His need to optimise his mother's happiness reveals deeper emotional fractures rooted in abandonment and unresolved childhood experiences. The series explores how such emotional gaps shape behaviour, especially among young adults who grow up too quickly.

However, while the intent is layered, the execution begins to slip as the show progresses.

After a sharp start, the writing loosens considerably. Characters who feel grounded in the initial episodes begin to behave in ways that do not always align with their emotional journeys. Agastya, in particular, becomes difficult to engage with. What could have been a nuanced portrayal of a young man dealing with parental absence slowly turns into a more abrasive and controlling personality. His actions cross into toxic territory, yet the narrative does not always hold him accountable in a meaningful way. This imbalance hampers the overall viewing experience.

The show also tries to take on several themes at once. Teenage attraction, evolving relationships, single parenting, abandonment, dating and the idea of giving love another chance are all important subjects. Individually, they hold weight. Together, they require careful handling. Here, they begin to compete for space rather than complement each other.

Vinita's journey as a single mother remains one of the more compelling threads. Singh brings a natural warmth and ease to the role, making Vinita feel real and emotionally grounded. Her attempt to rebuild her life while staying open to love is handled with sincerity. The series touches on modern parenting styles, particularly a gentler, more understanding approach. At the same time, it raises an important question about boundaries. What happens when that approach meets a strong-willed child who begins to overstep? The show introduces this tension but does not explore it deeply enough.

Ahuja delivers a committed performance as Agastya, capturing both his brilliance and vulnerability. However, as the writing becomes inconsistent, the character's arc begins to feel uneven. Angira Dhar, as Ira, the sharp and self-assured mathematics professor, adds an intellectual counterpoint to Agastya, though her track feels stretched and at times unnecessary.

Ranveer Brar, as Abhimanyu, plays a key role as the man who enters Vinita's life. He brings an understated charm and a calm presence that work well against the household's emotional intensity. His performance feels restrained and sincere, making his character instantly likeable. However, the writing does not give him enough depth. His emotional arc remains underexplored, especially in moments that demand greater impact, thereby reducing the weight of his presence in the larger narrative.

Celesti Bairagey, as Agastya's former love interest, adds a certain freshness but remains underwritten, while the supporting cast, including Puja Banerjee and others, does not have enough screen time to leave a lasting impression.

One of the more interesting aspects of the series is its attempt to foreground mathematics beyond the classroom. It brings in applied concepts, theoretical thinking and even touches upon startup culture, showing how numbers influence real-world decisions. It is refreshing to see a subject often treated as dry being given narrative importance.

Yet the dramatisation around it does not always hold.

Certain developments feel exaggerated or unrealistic, especially in the context of a college student navigating such complex, high-stakes situations. The gap between concept and execution becomes more visible here. The show aims to be both intellectually sharp and emotionally resonant, but it struggles to maintain that balance.

Visually, the series stands out. The use of VFX and graphic elements to represent mathematical thinking adds a distinct layer to the storytelling. These sequences help simplify abstract ideas and give the show a visual identity that feels fresh and engaging.

What ultimately holds Ma Ka Sum together, despite its flaws, is its emotional core. The bond between Agastya and Vinita remains its anchor, even when the narrative begins to lose direction. There is sincerity in the way the series captures everyday interactions, small disagreements, and unspoken care.

The series begins with a clear equation—a strong premise plus grounded characters should lead to a compelling story. Somewhere along the way, that equation becomes unbalanced. The ideas remain interesting, but the writing loses precision and the characters lose direction.

Ma Ka Sum is not without merit. It attempts something different, and for a while, it succeeds. However, as it expands its scope, it loses the very focus that made it engaging in the first place.

Maa Ka Sum is now streaming on Prime Video.