Audrey Einstein (Audrey & Einstein) (2004)

Audrey is a shy girl who spends a lot of time alone. One day, he little boy who lives next door asks her to take care of his googly-eyed pet fish, Einstein. Left with no choice, Audrey reluctantly takes him in. But as she becomes increasingly annoyed by Einstein's intrusive staring. Finally, enough is enough, Audrey decides to lock him up in the cupboard. The next morning when Audrey remembers to take out the bowl, she discovers that Einstein has retreated to his castle, and he won't come out! Audrey does everything to get him to come out again. Will she succeed? And might this be the beginning of very special friendship?