"The Underworld usually isn't really meant to be a fun place - but tell that to Hades! He loves the dark and the stinky smell of sulfur. However, there is one thing that Hades is not a fan of: dogs. And when Zeus and his fellow Olympians encounter Cerberus - a snarling, three-headed dog - Hades must conquer his fears and tame the hound so everyone can continue into the Underworld and deposit their Titan prisoner, Oceanus, back where he belongs!"--Information...

Twelve-year-old Idun, the goddess of youth, races to protect her grove of magical apples from the mischievous schemes of Loki.

"After battling fireball-throwing Titans, the young Olympians find themselves on a double quest: Not only must they find more Olympians that Cronus has swallowed, but they're also in search of magic seeds that will help rejuvenate the earth after the terrible drought that plagued the lands, thanks to Hyperion. But a wind-throwing giant named Typhon has other ideas. Can the Heroes in Training withstand the storms that are coming their way?"--Information...

"Phew, it's hot! Under the titan Hyperion's rule, the sun is burning even brighter than normal and scorching everything in northern Greece--including the villagers! The Olympians are forced to play a sizzling "game" of Dodge the Sunbursts as Hyperion hurls giant fireballs that could fry them to pieces! Armed with some clues, Zeus, Poseidon, and Hades set out to figure out why in the world Hyperion has been making things so hot. They also need to rescue...

Persephone and Aphrodite are continuing the quest to try and find some missing jewels. They end up meeting a lost bunny in their travels, who is looking for the Castle of What-Ifs. The girls end up in a magical, delicious land, where they meet a unicorn made of chocolate, with a very special crown--one that might be the key to finding one of the missing jewels!

Twelve-year-old Sif, goddess of the harvest and a reluctant seer whose abilities are woven into her hair, goes on a quest with Freya and Loki after Loki cuts her hair in a prank gone wrong, causing the crops of Midgard to fail.