The episode starts with Mitch driving a lifeguard truck on the beach. Suddenly he sees something in the water and calls it in requesting all available units. But the victim turns out to be a paper bag. So about 20 lifeguards was sent to rescue a paper bag. Later when Mitch enters the shower, everybody is wearing a paper bag. Rookie school begins. Guido, an Italian guy wants to become a lifeguard and he bothers Mitch. When Guido enters the meeting room, he sees the terrible mess there and decides to clean the place up. When Stephanie enters, she thinks that everything in the room is new, but Guido has just polished it a bit extra. In the real rookie competition, the rookies are competing in a race called the Gauntlet. And they also race the Gauntlet for practice. When Summer has climbed up to the top of the pier and is about to jump, she chickens out and has to walk back to the beach. On the beach, C.J. starts talking to her and reveals that she had the same problem when she was a rooki (thetvdb.com)