Tommy of TV's Rugrats gets a new baby brother and—with the help of Chuckie, Phil, and Lil—tries to return the interloper to the hospital. His antiquest provides opportunities to fold speculative realism into fantasy adventure as the plot and settings of this 1998 narrative fuse a kid's view of realistic objects and situations with adventure-movie conventions, using the freedom of the animated medium with virtuosity and minimal flamboyance. The dialogue reproduces infantile idiom even as it parodies the baby talk of adults, and a touching, didactic scene involving a baby blanket that's become the object of sibling rivalry may appeal to a broad age range: it's as strikingly elegant as it is obvious in its use of metaphor. Directed by Norton Virgien and Igor Kovalyov and written by David Weiss and J. David Stem; with the voices of E.G. Daily (Babe: Pig in the City), Christine Cavanaugh, and Kath Soucie. 79 min.