Clarence and Belson get paired up on a field trip to the Zoo.
PlotThe episode begins with the school bus arriving at the zoo. All the kids step out of the bus. Belson complains about the trip, then Clarence runs over to him saying he forgot his juice box. Belson thinks Clarence should go look for his "loser friends", Jeff and Sumo, but they're both sick and couldn't come.
Ms. Baker points out that since one of them, (Breehn) is allergic to peanuts, they have to stay away from certain areas of the zoo, and all the children get disappointed. The children wait in a long line to see the turtles, but it takes so long that Belson leaves and says he'll solve the mystery later. Clarence follows him. As the both of them are walking, Clarence is amazed by all the animals, even by pigeons and squirrels. Belson is not amused and says they can see those animals anywhere. Clarence thinks all the animals are so great, and notices that a lot of the animals don't have questions on his paper, so he makes up his own questions about them. Belson starts walking fast trying to get away from Clarence, but Clarence chases after him.
The ambulance truck arrives because of Breehn's allergic reaction to the peanuts. Ms. Baker tells all the children to get on the bus, and Nathan punches Percy and Breehn for ruining the trip. Belson and Clarence are still at the zoo, and are looking at the bats. Clarence learns about bats using echolocation, and tries doing it himself, but ends up knocking things over. Belson gets really angry and calls Clarence annoying.
Clarence and Belson realizes that it's nighttime and the zoo's closed. Belson is upset, but Clarence is happy because they get to say goodnight to the animals. Belson doesn't understand how Clarence can turn the biggest problems into something good, and Clarence doesn't understand how Belson doesn't like anything. Belson reveals that he likes dolphins, but they weren't even there. Clarence says that if the tank's closed, the dolphins must be somewhere else. He looks at the map and the only place they haven't been to yet is the "animal church", so they start making their way there, and sneaking past the Zookeeper at the same time.
Ms. Baker arrives and tells the police it'll never happen again. Then she scolds Clarence and Belson for leaving the group and tells them that she was really close to moving to California, which causes her to start daydreaming. Belson tries to get her attention, and tells her that the zebra stole the key and Clarence figured it out. Clarence tries to give Belson a zoo power bear hug, but fails and the episode ends.