"Wrath of the Titans," Starring Sam Worthington Hey, Perseus! You've just dispatched Medusa, a horde of Furies and the dreaded Kraken, and rescued Andromeda and the city of Argos. Where are you off to now? Fishing? Seems reasonable for this demigod (Sam Worthington), the adopted son of a fisherman. But when you're the hero of the 2010 "Clash of the Titans" remake - which made Warner Brothers almost $500 million worldwide - it's inevitable that your real dad, Zeus (Liam Neeson), will hit you up for help. Previously, he and Hades (Ralph Fiennes) threatened mankind; now, in "Wrath of the Titans," man's faith in the gods is waning, and Olympian fat is on the fire. To remain immortal, Hades has allied himself with the petulant Ares (Edgar Ramirez) to free Kronos, the titan imprisoned in deepest Tartarus. Hi-yo, Pegasus! That's about all the plot you get (or need) in this action spectacle. What you get in abundance, as before, are its true stars: monsters in digital (and in some theaters 3-D) detail, notably a chimera; three huge Cyclopes; Makhai (minions with two heads and torsos); and Kronos himself, a lumbering Gargantua of living lava, all engaged in furious, fairly bloodless PG-13 conflict. Of course, in a tradition dating to the original "Clash of the Titans," from 1981, you also get lots of British thespians hamming it up with trifling dialogue; new recruits include Bill Nighy as Hephaestus, and Rosamund Pike as Andromeda (now a warrior queen). At least it doesn't take itself too seriously. There are also soldiers, fireballs, smoke and sand. But not much to think about when the dust clears. "Wrath of the Titans" is rated PG-13 (Parents strongly cautioned). It has copious but largely harmless conflagration.