While talking with the gang, Howard proudly announces that his space toilet is being deployed on the Space Station International Space Station. After going over the schematics, he realizes he made a "teeny-tiny" mistake on the specifications for the diverter valve, that will cause the toilet fail after about ten flushes. Knowing his career is at stake, he gets Sheldon and Raj to help him find a way to reinforce the structure so the waste material avoids the spinning turbine (keeping waste away from the fan).