Percy Jackson and the Olympians is back after a two-year break — and the kids are officially all grown up.

Created by Rick Riordan and Jonathan E. Steinberg, the Disney+ original series follows Percy Jackson ( Walker Scobell ), who discovers he’s a demigod — the son of Poseidon (Toby Stephens) — and is thrust into a hidden world where Greek gods are real, monsters roam and heroes are made. As he trains at Camp Half-Blood, Percy teams up with fellow demigods Annabeth Chase ( Leah Sava Jeffries ) and Grover Underwood (Aryan Simhadri) to stop a brewing war among the gods, all while uncovering the truth about his identity and destiny.

Season 1 was based on Riordan's first novel, The Lightning Thief . Season 2, which premiered on Dec. 10, follows the plot of his second book, The

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