Keys to the kingdom

Arthur Penhaligon, destined to die at a young age, is saved by a key shaped like the minute hand of a clock, but his survival invokes the wrath of the mysterious Mister Monday who will stop at nothing to get the key back, and Arthur is forced into a desperate quest to unravel the secrets of the key and discover his true fate.

Seventh-grader Arthur Penhaligon returns to the parallel universe known as the House to fight his latest enemy, Grim Tuesday, whose greed threatens to destroy both the House and the Earth.

Even as he grows stronger and closer to discovering the secret of his identity, Arthur must face further dangers and conflicts as he struggles to attain the Sixth Key from the powerful Saturday.

Still holding the fourth key, Arthur Penhaligon receives a suspicious offer from Lady Friday and travels to the Middle House to find out if he should accept it.

Even as he grows stronger and closer to discovering the secret of his identity, Arthur must face further dangers and conflicts as he struggles to attain the Sixth Key from the powerful Saturday.

When Arthur is drafted into the Glorious Army of the Architect by Sir Thursday, he must survive basic training, avoid getting posted to the Front, and figure out how to free Part Four of the Will, while Leaf tries to banish Arthur's doppleganger on Earth.

As Arthur Penhaligon seeks to find the seventh key, complete his quest to save the Kingdom to which he is heir, and learn his true identity, he discovers that he has a greater purpose than he could have imagined.

Still holding the fourth key, Arthur Penhaligon receives a suspicious offer from Lady Friday and travels to the Middle House to find out if he should accept it.

Everyone is after Arthur Penhaligon including strange pirates, shadowy creatures, and Drowned Wednesday, whose gluttony threatens both her world and Arthur's.