Episode Title:Butterfly Effect / The Green House.Episode Description:Butterfly Effect: After a yo-yo trick he was showing off goes wrong, Lincoln discovers that it smashed and spilled Lisa's chemicals. Afraid of Lisa's reaction, Lincoln does not tell her against Charles' suggestion which sets off a chain reaction of events that unravels the entire household.
The Green House: Lincoln helps his siblings do things that will make their ways environmentally friendly in order to not be labeled an outcast for making his class lose an environmentally-centered challenge due to his family's excessive resource usage. Soon, Lincoln has to do his part when his friends wish to use his house to play video games.