Carter is fired when a quack mentalist predicts a criminal will escape from jail.

A nightclub owner (played by Bob Newhart) must be protected from potential killers.

Carter and Sergeant Kane are captured by fur thieves.

Carter Nash lacks the secret formula he needs to turn into Captain Nice in order to prevent a robbery.

Carter discovers that the Bigtown payroll has been replaced with counterfeit money.

Captain Nice breaks up a potential massacre, so in retaliation, the gang invades the Nash home.

While trying to stop a jailbreak, Captain Nice is slipped a pill that makes him appear intoxicated.

Carter is dismissed in an economy move and Mrs. Nash retaliates by stealing his costume.

Captain Nice prevents a disgruntled explorer from murdering his benefactor.

Carter risks being unmasked as Captain Nice in order to reveal the identity of an arsonist.

A mentalist is kidnapped by thugs who think he can find a fortune in stolen money.

Carter searches for con artists who built a faulty bridge and kidnapped Mayor Finley.

Caterpillar develops a ravenous appetite and super powers when it accidentally drinks Nice's secret formula.

Captain Nice helps rescue a woman from Sheik Abdul.

Every hero has to have an origin story and this is that of Captain Nice! Meek, mild-mannered police chemist Carter Nash creates a formula that grants extraordinary powers to whomever drinks it. It is not his original intention to drink it himself. He is a shy and unassuming man and prefers to have someone else take on the burden of being a hero. But his attempts to give it to the Mayor of the city are rejected (the Mayor completely misunderstands what the formula does and is in the middle of a crisis: the villain 'Chameleon' recently escaped). Rejected, Carter returns to his lab. But events will not allow Carter the anonymity he desires and soon he'll be forced to take the potion and be transformed into the City's first Super Hero: Captain Nice!