Placing high-seas pirate adventure on the Tietê, a polluted urban river running through São Paulo, forces heroic maritime tropes to collide with mundane, degraded local reality. The incongruity itself becomes the comic engine: the frame does not develop the river so much as use its unglamorous specificity to deflate grand genre conventions.
Individual strips advance by discontinuity rather than causal plot: a setup is followed by a swerve that ignores or contradicts its own premises. Humor is generated by withholding the expected payoff and substituting an unrelated or self-undermining turn, making disruption the structural principle rather than an occasional flourish.
The anthology demonstrates that a recurring cast and premise can sustain a serial strip without consistent characters, stable world rules, or episode-to-episode memory. Coherence is relocated from story and continuity to tone and recurring motif, suggesting these are sufficient to hold a series together.