After an exciting summer as a vacation worker in a hotel, life tends to run more normally. Tom continues to tinker with his inventions, Anna is training to be a photographer and Liv is eager but willful to pursue a career as an actress. But one day, a strangely dressed girl named Sandra shows up at Tom's door. It quickly turns out that the girl in the pink petticoat has traveled to the present with the time machine from Hotel 13. However, her appearance changes the past and with it the present and future. Tom, Anna and Liv must travel back in time with Sandra to keep the world from falling apart. Not only is Sandra's future with the movie star David at stake, but also the friendship of Tom, Anna and Liv.
Lars is experiencing exciting adventures again. First he discovers a sunken ship with Robby, then he drives away evil bandits and finally a strange bird appears at the North Pole: It's Caruso, the singing penguin.
After a long journey with new brown bear friend Lea, Lars finds his parents have become ill. While fetching medicine, Lars crosses the snow line for the first time and learns about the forest. With his parents cured, it’s time to relax until Yuri, the funny Puffin, drops in unable to fly. It’s up to Lars and his chillin’ chums to help Yuri head back to the skies where he belongs!
Mark Demski (Jan Sosniok) discovers his girlfriend is cheating on him and thinks it has happened because of his small penis. Sad, he dumps the girl and promises himself never again to fall in love, but he fails. When he encounters Lara Singer (Doreen Jacobi) he must fight with his own fears.