Cells at Work is a fun and light educational show that presents human biology in a unique way. However, the characters endlessly repeat the same cycles (they are cells after all), which can get a little monotonous. The only breaks in monotony are when character development sporadically happens. There really isn't an overarching plot line, and random character development isn't always enough to carry the show. Still, the uniqueness of it all is enough to make you keep coming back for more.