Clark and his family are at the farm. Mr and Mrs Kent are going on a trip to the big city, Metropolis.

The Kents leave Clark alone for a three-day trip to Metropolis. They warn him not to use one of the bathrooms.

Earl Jenkins is saying goodbye to his son. He suddenly starts shaking.

He goes to the Luthorcorp office to ask to see Lionel Luthor. The cleaner opens the door and Earl shakes. He accidentally kills the cleaner.

Clark plans a small party while his parents are out of town.

The party gets out of control and there are too many people and a very big mess.

The barn shakes. Clark and Whitney go there. They find Earl.

He says he used to work at the Smallville Factory run by Luthorcorp.

He says he cannot stop shaking since he cleaned the Level 3 of the Luthorcorp plant. There was an experiment there, with green mist.

Earl goes to hospital and is arrested by the police.

Clark returns home and finds his house very, very messy. He uses his superpowers to clean up, but his parents have already returned home. He is in trouble.

Clark and Mr Kent go to the hospital where Earl says he's innocent.

Earl has another attack of the shakes and escapes from the hospital.

Clark goes on a field trip to the Luthorcorp plant and tries to find Level 3.

Earl arrives and takes the school students hostage. He wants to know about Level 3.

Gas starts to come out because of Earl shaking. Lionel Luthor and Lex arrive with the police.

Clark cannot fight Earl because he loses his strength near Earl. (Probably Kryptonite)

Lex goes in and offers to show Earl Level 3 if he frees all the students. Lex does not know about Level 3.

Clark tries to find Level 3. He does and he leads Earl and Lex to it. But there is nothing there.

Earl and Lex are on a walkway in the roof when Earl has the shakes. He makes the walkway collapse. Clark rescues both Earl and Lex.

Lionel Luthor denies any knowledge of the experiment. Lex thinks about how Clark managed to rescue Earl and himself.