謎の美少女転校生．千斗いすずから強引に遊園地デートの誘いを受けた可児江西也。 わけもわからず連れて来られたのは、さびれたアトラクション、ダメダメなサービスの日本一残念な遊園地．甘城ブリリアントパーク。 その支配人だという”本物の”お姫様．ラティファに引き合わされた西也は、なぜか突然、閉園の危機にあるパーク再建を託されてしまう。そこはただの遊園地ではなく！？

リラックマたちが遊びにでかけた閉園間近の遊園地で巻き起こる事件とそれをめぐる人々との出会いのアクティブな一日を濃密に描くノンストップな本作。「リラックマとカオルさん」でお馴染みのキャラクターたちももちろん、本作は個性豊かな新キャラも多数登場！

Having grown up in a world of manufactured happiness, Lucy, the cynical teenage daughter of a idealistic theme park princess mom, wants to get out and experience something real. When Ian, the new park owner's son, arrives and sweeps her off her feet, Lucy is left wondering if fairy tale endings do exist after all. But when a scandalous secret turns her life upside down, she learns Happyland is far from a walk in the park.

Ripley Holden is a small-time entrepreneur desperate to make it big with his new state-of-the-art amusement arcade. The opening extravaganza is overshadowed by the find of a dead body on the premises. DI Carlisle is called in and quickly finds he has more on his mind than murder, when he falls in love with Ripley's long-suffering wife.

The fifth incarnation of 'The Sooty Show' sees Richard, Sooty, Sweep and Soo start a new job as handymen at a seaside holiday park.