Maattrraan

Geneticist Ramachandran attempts to engineer a child with multiple talents and produces conjoined twins Vimalan and Akilan who are joined above the waist and share a single heart. Doctors suggest a sacrificial surgery to separate them, but their mother Sudha objects, choosing to raise the boys as they are. The twins grow with opposite personalities—Vimalan studious and reserved, Akilan carefree and social.

Ramachandran's research breakthroughs lead to the rapid growth of his company, Locus Lacto Products, aided by Sudha. Energion, the energy drink for children, becomes a top-seller in the market. The family gains immense wealth as his fame rises.

Anjali joins the company as a translator and spends time with the brothers, alongside Volga, a Russian journalist. Anjali falls for Vimalan, while Akilan grows jealous yet remains supportive. Volga's presence foreshadows trouble ahead.

Volga reveals Energion is adulterated and could kill thousands, naming Ajay Ratnam as a spy who was murdered for cheating. She accuses Ramachandran of killing the R&D head Raghu and setting the lab on fire. Before dying, she swallows a pen drive containing crucial evidence and is murdered.

Anjali obtains the pen drive during Volga's autopsy and hands it to Vimalan, who vows to uncover the truth. The drive contains clues about the company's corrupt practices and Energion's dark secret. Tension rises as goons close in.

In a brutal assault, Vimalan is left brain dead. His heart is transplanted into Akilan, enabling the later surgical separation of the twins. The family spirals into shock as life hangs in the balance.

The separation surgery is completed, resulting in Vimalan's total death. Akilan survives with a new heart, while Anjali remains by his side as they cope with the loss. The twins' fates diverge emotionally as Akilan journeys forward.

Sudha is warned that Energion is adulterated, prompting her to push for a raid by the food safety department. To her surprise, Energion is declared safe and hygienic, deflecting suspicion away from Ramachandran. The public verdict masks the deeper conspiracy at play.

Akilan traces the scheme to his father and uncovers his involvement in the deaths of Volga and Vimalan. He locates a pen drive containing photos that reveal unsafe cattle feed ingredients used in Energion's supply chain. A new chapter of danger begins as he digs deeper.

Accompanied by Anjali, Akilan travels to Ukraine to unravel the scheme, aided by Ashok from the Indian Embassy. Ashok is killed by Dinesh, escalating the peril and narrowing their window for truth.

The photos reveal that the 'athletes' were part of a Unified team under the 1992 Olympic flag, whose plane crash deaths were faked to avoid national shame. The investigation points toward the army medical research centre and uncovers Energion's original purpose as a steroid to boost performance. The scandal exposes a system-wide conspiracy.

The team learns that the adulterant can only be detected with an ionization enhancer. Dinesh launches another assault, but Akilan defeats him, reclaiming the incriminating ingredients and bringing the evidence back to India. The case edges closer to justice.

Ramachandran is exposed and nearly arrested as his grand design unravels. He admits that the twins were created using DNA from many talents and that society itself became his lab. His attempt at escaping fate ends when his leg is crushed by a collapsing mechanism trying to stop him.

Akilan is conferred national bravery recognition for exposing the fraud, and he marries Anjali. They become parents to twins, offering a hopeful resolution to a tale of ambition, deceit, and redemption.