5 Season
186 Episode
Hey Arnold! - Season 3 Episode 33 Biosquare (2004)
As a science assignment, Arnold and Helga have to work together, and get along with each other, for 24 hours in the Sunset Arms greenhouse.
- Country : United States of America
- Genre : Family, Animation, Comedy, Kids
- Studio : Nickelodeon
- Director : Craig Bartlett
- Cast : Spencer Klein, Francesca Marie Smith, Jamil Walker Smith, Olivia Hack, Anndi McAfee, Justin Shenkarow
