Lois decides to go undercover at a club which is a front for crime family. Clark decides to go undercover as well. When the sister usurps her brother, she makes a move on Clark. And to stay on her good side he outs Lois.
Lois and Clark go undercover at a nightclub to find out about a connection between the owners of the club and a group of arsonists called the "Toasters". Superman is able to put out the "Toasters" permanently.