Smallville :

Clark must solve the riddle of the mysterious Nicodemus flower and Lex's suspicious involvement with it. The formerly extinct flower, revived by meteor soaked rocks, infects the residents of Smallville, removing their inhibitions: Jonathan becomes lazy, Lana tries to seduce Clark and Pete attempts to kill Lex.

The victims then go into a deadly coma. The doctor who rediscovered the flower must battle to find a cure.