Penny and Camilla attend a party at school. Meanwhile, Penny holds on despite Bauer embarrassing 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 Bakìa, 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 for explanation about Penny's kiss with Sebastian but Penny assures her it was just an exercise. It seems that Penny and Bruce are finally going to meet.
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.
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.
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.
Penny writes to her father thanks to Raul's help but she finds the way to get the role of Juliet. Bakìa arrives at the Big One and everyone discovers her big secret.