The First spark, Harshini discovers the Naga siblings interest in music. Nagamalai awestruck by Harshini, sings praises and explains his butterfly feeling he had to Nagamalini. Jyothibala who finds out that Pavitra is pregnant, informs triple chords that he has arranged for a meeting with a producer.

Do you love someone?' Nagamalai is curious to find out about Harshini upon their first meeting at a cafe. An opportunity that went wrong for triple chords upon meeting Arjun, owner Pitch Perfect, the leading record label owner. An argument breaks out in the middle of the road leading to an accident. Meanwhile, in the current time line as the preparation for the event takes place...

While Jyothibala and Nagamalini settle into the hotel, Sethu and team gear up for the arrival of Harshini, the lead singer of one music. An unexpected crowd has gathered outside of the hotel adding further stress onto Sethu's mental state. Nagamalini spots her arrival from her room, who then reminses the past through her world of silence.

Time ticks as harshini awaits for the members to turn up accepting the offer of forming a band. Will they turn up? Meanwhile Dhilip is caught running back to his old habits. Jyothibala spots Dhilip hugging Pavithra who then turns out to be someone else.

The birth of One Music. The entire team sit for their first jamming session at Naga's siblings garage. Through exchange of ideas, the band's first song emerges, "Yennai Nee Katti Kondaal." Through this journey, Aaryan instructs Dhilips to take responsibility for his actions and marry Pavithra. He then arranges for the entire wedding which sparks an attraction within Harshini. The triangle of attraction begins.

The shift. Aaryan who is now homeless, seeks shelter under Naga sibling's garage arranged by Harshini. Meanwhile Nagamalai receives a thank you message from Harshini for his kind gesture, rekindling the mesmerizing effect she has on him. Jyothibala and Aaryan head to Arjun's office bumping into Jyothi's school mate, Malar who then reveals that Arjun is taking them for a ride. Chaos breaks loose in that office.

The release. As One Music's plans with Arjun backfires, the band is back to square one with their song yet to be released. Harshini being the leader of One music, sends out a broadcast message, initiating the song release on YouTube platform. Will the team agree to this proposal? Meanwhile in the current timeline, Shiva has successfully gotten full access to the CCTV system.

The first trouble. Sethu's subordinates successfully gained their entry into the hotel prepping for their drinking session when their shift ends. Meanwhile harshini reveals that the band was invited for a success meet by harshini's dad.

The question mark is imposed as everyone gathers and awaits on Aaryan to join the dinner. Dhilip who gets caught for his marriage by Janani receives a stern warning for his actions and is left with a chance to reform. As the dinner comes to an end, Nagamalai is filled with disappointment as Harshini does not return back home with the Naga siblings.

The fortune. The band is greeted by a handsome looking man introduced by Harshini, who stirs a fear within Nagamalai and Aaryan. He then turns out to be a young enthusiastic entrepreneur who's interested in producing One Music's first Album. One music Vol 1. As things turn out well for them, Harshini meets with an unfortunate circumstance.

Family. One music's morale has been affected by Harshini's Dad's health condition. Spending hours by the site of the team's biggest encouragement, hoping for his speedy recovery. Nagamalai who is alone at the hospital shares a sentimental exchange of conversation with Harshini's dad where the beauty of love towards a child through a parent's eye is explained. Nagamalai is left with hopes that his love might win...

Was it a dream or desire? Jyothibala finally agrees on the spark that resides in him for Malar, however clearly stating the importance of his passion. Harshini wakes past her alarm while her dad is awaiting discharge. As she is ready to leave home, she is caught by a surprise. The Naga siblings return home to their furious dad waiting for their arrival, something terrible goes on.

Love engulfs the heart. Dhilip who works as a security receives a bouquet of flowers while on duty, threatening his marriage life. Harshini who is accompanied by Aaryan speaks to his parents about his pure intentions in pursuing his passion. Silence fills the air as Harshini and Aaryan take a walk back to her house, as Harshini questions the reason behind the silence, Aaryan's answer sweeps her off her feet. Alli pookal' begins.

Nagamalini, who is ready to sleep, receives a gift at her doorstep prior to her birthday. A gift, which then has a hidden agenda. Sethu who is already stressed over his wife's health condition gets informed that Aaryan has arrived in Singapore but diverted his destination elsewhere. This fumes Seth. Meanwhile in 2015, Aaryan stumbles upon the homeless Naga siblingings.

Under one shelter. Aaryan and the Naga Siblings who vacated the garage have been offered a place to stay at Harshini's house. Jyothibala receives a bouquet of flowers received by his grandmother, stirring curiosity. Aaryan and Harshini meet Mithran who emphasises on the importance of social media as part of their growth as a band. Meanwhile Dhilip spots Rekha at his house.

The push of fate. Aaryan and Jyothibala meet Dhilip who then explains his issues with Rekha. He reveals her psychotic nature and his non-involvement pertaining to his issue. Aaryan decides to take matters into his own hands to resolve this issue. Dhilip who returns home drunk after receiving a stern warning from Aaryan regarding his behaviour, pushes Pavithra after a confrontation. Pavithra starts to bleed.

The storm. Some of the band members are gathered at Harshini's house. They do a mini countdown with Mithran over the phone prior to launching their first single. The band is demotivated as the views progress slowly and head to bed. Aaryan wakes up to an alarming call which eventually marks the first black day in one music's life.

The war begins. Mithran reveals his rivalry with Arjun, the business tycoon. Aaryan decides the band should use an old method in launching the band's album. Back to basics. One music's fire towards their passion roars throughout the streets. Athirathu Paar One love Padai.

Shiva is chased out of his orphanage. Adhira gives him shelter, hope and love. Will he be able to love for the first time in his life ?

Now that you know everyone's reason, Its time to choose your Protagonist and your Antongonist! Whose side are you ? Naam - The Finale !