Utalentowana wokalnie Penny jest córka gwiazdy muzyki pop. Razem z przyjaciółką - Camillą - dostają się do MARS-a, słynnej szkoły dla młodych artystów. Spin-off serialu 'Alex i spółka'.
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.