Penny and Camilla attend a party at school. Meanwhile, Penny holds on despite Bauer embarassing her again and Camilla is more and more in love with Sebastian.
Penny gets closer to Sebastian thanks to an acting exercise. In the meantime, she and her friends go to Raul's bowling and Penny discovers he lives there.
It's parents' day at school and Penny is disappointed because her mother is not there. Meanwhile, she angers Lucy, who will take revenge by putting Bauer against her.
After Tosca assigning her a song by Bakia, Penny returns home, but finds out that her mother has left again and takes it badly. Meanwhile, Camilla spends more time with Sebastian.
Camilla asks Penny for explanations about the kiss with Sebastian. Meanwhile, the paths of Penny and her father Bruce seem to be finally about to cross.
Freddy stops Penny before she is seen by the crew and Bruce. Meanwhile, Penny doesn't pass Tosca's exam and news report that Bakìa has a secret daughter...
Penny's exam went wrong so she won't be able to hold the Big One audition. Sebastian and Penny kiss each other in front of Lucy and a broken-hearted Camilla
In order not to hurt Camilla, Penny tells Sebastian they aren't made for each other. Anyhow, she apologizes to Camilla but she can't tell her the truth about her first meeting with Sebastian.
While Penny, pushed by her mother, decides not to abandon her studies to the M.A.R.S., the teachers discover that Sebastian is staying in the school without permission.
Penny risks to be expelled from the M.A.R.S. but thanks to her friends persuasion, the teachers decide to punish her but not to expel her. Meanwhile, Penny and Camilla make peace.
Camilla discovers everything about the first meeting of Sebastian and Penny. Meanwhile, Penny brilliantly passes Tosca's exam and can therefore participate in the auditions.
Seb has just found out the truth about Bakìa and the stolen song, and he doesn't want to see Penny any more. She then falls down the stairs and ends up with two broken ribs.
Penny and Sasha anxiously await the song Seb promised to write them for The Talent Show. While Freddy plots against them, Penny is more concerned about Bakìa and Pete.
Seb comes back from his tour, only to find something's changed with Penny in his absence. At the school, the students prepare for their roles in the new Ugly Duckling musical.
Penny and Rob's romance develops while Seb dedicates himself fully to music, composing a new song for the M.A.R.S.ical. Martha continues with her cyberbullying mission.
The harmony between Vicky and Sasha is growing, and not just in their dancing. Tom and Camilla ask Bauer to be their guest performer at The Talent Show.
The cyber bully is unmasked. The winners of The Talent Show are announced. Penny gets some interesting offers, and must also make decisions about her love life.