Curiosity gets the best of Rainbow Fish and his friends, who decide to swim outside the school yard one day during recess, despite the warnings of wise Old Nemo.
Spike, angry at Miss Cuttle after she punishes him for breaking a class rule, wishes for a new teacher, but when a substitute takes over the class, Spike longs to have Miss Cuttle back.
Rosie and Dyna were the best of friends until they worked on a school project together. Can Rainbow Fish help clear up the misunderstanding and mend their friendship?.
Puffer's habit of telling tall tales almost gets him and his friends in trouble when they refuse to believe his warning that a shark is heading their way.