Rekha, a mother who lives on thorns, wishes to give a life filled with flowers to her daughter, Maha. But fate has other plans when a man they trust betrays them.

As Maha waits for Guna, he is thrilled when Malar shares good news with him. Sakthi overhears his mother talking to his father, an underrated cop, about his lost promotion.

Kasi beats up Rekha to reveal Maha's location. Sakthi is disappointed to see his father being mistreated by his rival Karthick and his dad.

It's the first day of school, and the students of Grade 11-A go through introductions, spats and emotional moments. Meanwhile, Guna introduces a new class teacher to them.

Kasi forces Rekha to accept Malar's call. Nikitha's parents scold her harshly for singing in front of everyone. Karthick insults Sakthi's father in school, enraging the latter.

Elections to choose the class representative become the hot topic in Siragugal. All is not well at home for Yamini and Madhi. Sakthi's father asks him about his first day.

Karthick asks his father for a motorbike with his mother's help. Sasi and Ekambaram settle in the boys' hostel and get unsettled. Danger approaches Maha after she falls asleep.

Yamini and Madhi talk about their choice for the rep election. Sasi and Ekambaram are introduced to the 'friendly' Santhosh Sir. Guna receives a strange parcel.

Guna is disturbed by Nachiappan's threats. The rep election rules bring forth unlikely candidates. Kasi is still hunting for Maha, keeping Rekha captive.

A timetable mix-up leads to an argument between Class 11-A's chemistry and physics teachers. Karthi's mother blames Sakthi for her son's inability to contest the election.

Kasi tries to find Maha's whereabouts through the other women. Ekambaram remembers his promise to his father when he sees Priya alighting from a fancy car.

The rep election results are out, and Sakthi and Maha get equal votes. Kasi's goons get a lead on Maha's location. Will they find her?

Guna feels elated as Bullet returns from his village. As Sakthi's friends celebrate his win, Karthick's attempt to talk to Maha fails. Will Bujji's prank on Sasikumar prove fatal?

Karthick makes Sakthi's first day as the class rep difficult. Guna receives a notice regarding the school. Priya's dad reminds her about their life. Karthick's parents surprise him.

Sakthi shares the news about becoming the class rep with his father. Janani's painful past makes her bond with her friends stronger. Priya finds it hard to accept the reality.

Guna seeks legal help to save his school. Worried, Rekha informs Malar about Kasi's efforts to find Maha. The school committee agrees with Jeeva's idea regarding the road situation.

When Kasi's search for Maha fails in Chennai, he reaches Kanchipuram. Guna and Madan get into a tiff with Kasi's goons while Karthik vents his fury by hurting Sakthi with his bike.

Karthick's father punishes Sakthi's dad for the rift between the boys. Sakthi's dad reports a gang making illicit liquor. Maha gets upset as her friends enjoy her mom's dance on TV.

Madan organises a street play to create awareness about the school's issue. While Maha refuses to act, Nikitha breaks down when her dad warns her not to participate in the play.

Karthick enters the boy's hostel with Bujji. The students deliver an amazing street play and create awareness about their school's situation. But what happens when Kasi spots Maha?