Season 3
With Nicole having left the band, Alex & Co. starts to record their album, but Emma leaves the band when she loses her voice and has to get surgery. She also finds out that her father was fired as headmaster, but he is rehired soon after. Alex and Nicole mend their friendship, but instead of rejoining the band, she gets involved in saving a local theatre, The Blue Factory, which is run by her former babysitter Sara. Linda returns as a calmer and friendlier person, and The Lindas join Alex and Co. A new student named Clio arrives at the Melsher Institute, who is new in the area after having been bullied in her former school and deciding to quit her dream of being a dancer. She has a troubled relationship with Alex, but he sees through her hardened exterior. They grow closer and start dating.
Frustrated with the direction that their new manager Diana is taking the band in, Alex creates a secret masked internet artist persona named 'Nobody', and releases a song called "I Am Nobody" online, which finds worldwide success. Sam's personality starts to change because of the band's fame, but after a reality check from Rebecca, he returns to his normal self and applies for a scholarship to a prestigious school. Alex & Co. quits the record company and disbands, ending Linda's hopes of fame and turning her back to her old sinister self. Nicole develops feelings for Nobody, who encourages her to write her first song. She kisses him, not knowing he is really Alex. The original Alex & Co. is reunited, and they work to save The Blue Factory together. Sam is accepted to the new school but will have to leave earlier than expected.
At the Blue Factory's fundraiser concert, Rebecca leaves The Lindas after learning that Linda is still trying to destroy Alex & Co. Linda gets her dad to buy the theatre building as a roadblock for the gang. Rebecca sings with Sam, Clio dances on stage for the first time in months, and Alex & Co. performs "Welcome to Your Show", written by Nicole and Emma. After the band says goodbye to Sam, Alex reveals to the world that he is really Nobody.
One week after the Nobody reveal, Christian has moved to Australia with his family. Alex works to regain Clio and Nicole's trust after they find out that he was Nobody. Diana also encourages him to continue as a solo artist and manage his own career. After The Blue Factory's fundraiser is a success, the gang opens a record label. The Blue Factory Records, Alex encounters difficulty when the public only seems interested in Nobody. Rebecca and Emma bond over their failed long-distance relationships with Sam and Christian respectively. Ray is revealed to be Nina's son. Rebecca's sister Giada joins The Lindas and secretly admires Ray, ignoring Rebecca's warnings about Linda. Rebecca falls for Matt, who works at a juice shop as a waiter. He is also a pianist, and secretly hides his wealth from everyone.
The girls work to make Nina and Mr. Ferrari a couple. Emma's feelings for Ray grow as they work on the song 'So Far Yet So Close' together. Mr. Ferrari forbids their relationship, seeing Ray as a bad influence, which causes a hurt Nina to break up with Mr. Ferrari. Emma stands up to her dad and stays with Ray, while Mr. Ferrari apologizes to Nina. Nina makes amends with Ray for not giving him the benefit of the doubt. Nicole goes to a songwriting school, but realizes that she's still in love with Alex. She leaves a set of lyrics for a song called "The Magic of Love" with Sara. Alex is given the lyrics to add to his music, but Sara doesn't tell him who wrote them. Clio gets into the academy after auditioning with Alex; Matt also gets into the academy, but Rebecca finds out about his family's wealth. After he explains why he hid the truth from her, they tell each other that they love each other.
Clio's ex-boyfriend Ivan joins forces with Linda to help him get Clio back and to help Linda finally destroy Alex. Ivan steals the Nobody persona and tries to paint Alex as the impostor, but Ivan and Linda argue about the plan. Clio amicably breaks up with Alex when she realizes that he belongs with Nicole. With the gang's help and support, Alex is finally ready to take on Ivan. At the final Nobody challenge at the Blue Factory, Emma and Ray perform "So Far Yet So Close". Alex and Ivan perform "I Am Nobody", both dressed as Nobody and matching each other in dancing skills. Alex's voice modulator was sabotaged, so he sings without his mask. On the other hand, Ivan can't sing without his mask, which Linda had told Ivan was his biggest mistake in challenging Alex. This proves that Ivan is the impostor. Having reclaimed Nobody, Alex officially retires the persona, planning to only perform as Alex Leoni from then on. Nicole returns, entering the theatre as Alex is performing "The Magic of Love". After he realizes that she wrote the lyrics about him and their relationship, they kiss and get back together.
