The Mark of Athena (The Heroes of Olympus #3)(133)

The walls started closing in on him like the sides of a vise grip. Percy jumped up and grabbed the bottom of the hydra’s cage. He caught a brief glimpse of Piper leaping across a hopscotch pattern of fiery pits, making her way toward Nico, who was dazed and weaponless and being stalked by a pair of leopards.

Meanwhile Jason charged at Otis, who pulled his spear and heaved a great sigh, as if he would much rather dance Swan Lake than kill another demigod.

Percy registered all this in a split second, but there wasn’t much he could do about it. The hydra snapped at his hands. He swung and dropped, landing in a grove of painted plywood trees that sprang up from nowhere. The trees changed positions as he tried to run through them, so he slashed down the whole forest with Riptide.

“Wonderful!” Ephialtes cried. He stood at his control panel about sixty feet to Percy’s left. “We’ll consider this a dress rehearsal. Shall I unleash the hydra onto the Spanish Steps now?”

He pulled a lever, and Percy glanced behind him. The cage he had just been hanging from was now rising toward a hatch in the ceiling. In three seconds it would be gone. If Percy attacked the giant, the hydra would ravage the city.

Cursing, he threw Riptide like a boomerang. The sword wasn’t designed for that, but the Celestial bronze blade sliced through the chains suspending the hydra. The cage tumbled sideways. The door broke open, and the monster spilled out—right in front of Percy.

“Oh, you are a spoilsport, Jackson!” Ephialtes called. “Very well. Battle it here, if you must, but your death won’t be nearly as good without the cheering crowds.”

Percy stepped forward to confront the monster—then realized he’d just thrown his weapon away. A bit of bad planning on his part.

He rolled to one side as all eight hydra heads spit acid, turning the floor where he’d been standing into a steaming crater of melted stone. Percy really hated hydras. It was almost a good thing that he’d lost his sword, since his gut instinct would’ve been to slash at the heads, and a hydra simply grew two new ones for each one it lost.

The last time he’d faced a hydra, he’d been saved by a battleship with bronze cannons that blasted the monster to pieces. That strategy couldn’t help him now…or could it?

The hydra lashed out. Percy ducked behind a giant hamster wheel and scanned the room, looking for the boxes he’d seen in his dream. He remembered something about rocket launchers.

At the dais, Piper stood guard over Nico as the leopards advanced. She aimed her cornucopia and shot a pot roast over the cats’ heads. It must have smelled pretty good, because the leopards raced after it.

About eighty feet to Piper’s right, Jason battled Otis, sword against spear. Otis had lost his diamond tiara and looked angry about it. He probably could have impaled Jason several times, but the giant insisted on doing a pirouette with every attack, which slowed him down.

Meanwhile Ephialtes laughed as he pushed buttons on his control board, cranking the conveyor belts into high gear and opening random animal cages.

The hydra charged around the hamster wheel. Percy swung behind a column, grabbed a garbage bag full of Wonder bread, and threw it at the monster. The hydra spit acid, which was a mistake. The bag and wrappers dissolved in midair. The Wonder bread absorbed the acid like fire extinguisher foam and splattered against the hydra, covering it in a sticky, steaming layer of high-calorie poisonous goo.

As the monster reeled, shaking its heads and blinking Wonder acid out of its eyes, Percy looked around desperately. He didn’t see the rocket-launcher boxes, but tucked against the back wall was a strange contraption like an artist’s easel, fitted with rows of missile launchers. Percy spotted a bazooka, a grenade launcher, a giant Roman candle, and a dozen other wicked-looking weapons. They all seemed to be wired together, pointing in the same direction and connected to a single bronze lever on the side. At the top of the easel, spelled in carnations, were the words: HAPPY DESTRUCTION, ROME!

Percy bolted toward the device. The hydra hissed and charged after him.

“I know!” Ephialtes cried out happily. “We can start with explosions along the Via Labicana! We can’t keep our audience waiting forever.”

Percy scrambled behind the easel and turned it toward Ephialtes. He didn’t have Leo’s skill with machines, but he knew how to aim a weapon.

The hydra barreled toward him, blocking his view of the giant. Percy hoped this contraption would have enough firepower to take down two targets at once. He tugged at the lever. It didn’t budge.

All eight hydra heads loomed over him, ready to melt him into a pool of sludge. He tugged the lever again. This time the easel shook and the weapons began to hiss.

“Duck and cover!” Percy yelled, hoping his friends got the message.

Percy leaped to one side as the easel fired. The sound was like a fiesta in the middle of an exploding gunpowder factory. The hydra vaporized instantly. Unfortunately, the recoil knocked the easel sideways and sent more projectiles shooting all over the room. A chunk of ceiling collapsed and crushed a waterwheel. More cages snapped off their chains, unleashing two zebras and a pack of hyenas. A grenade exploded over Ephialtes’s head, but it only blasted him off his feet. The control board didn’t even look damaged.

Across the room, sandbags rained down around Piper and Nico. Piper tried to pull Nico to safety, but one of the bags caught her shoulder and knocked her down.