In ‘The Gaaga,’ Putin and his cronies are held to account, but it’s only a fantasy

Blankets are available if you get chilly. The performance of “The Gaaga,” after all, takes place in the basement of a makeshift bomb shelter — the now-closed Beat Brew Hall restaurant in Harvard Square — and the lobby has some curtained-off spaces with blankets and pillows, offering a little bit of privacy and a place for refugees to rest. Once inside the theater, the setting shifts to the dreamlike world of a young woman’s fantasy about an imprisoned Vladimir Putin and his associates awaiting trial in the Gaaga (the Hague).

Welcome to the always imaginative, viscerally engaging world of Arlekin Players Theatre and the US premiere of “The Gaaga (The Hague): A Fantastical Trial of Putin from a Bomb Shelter in Mariupol.” Our guide and sometime narrator is The Girl (17-year-old Taisiia Fedorenko, who fled Kyiv in 2022 when the Russians launched the war against her country). Her playful innocence in the face of the senseless murders of innocent people — portrayed with devastating grace — only amplifies the horrors of the invasion.

The mix of fact and fiction is handled simply. Each prisoner is introduced by The Girl with basic facts about his or her role in Putin’s orbit while a photo of the real person they portray is projected on screens behind them. And then each character does something ridiculous: The conspiracist pulls out a goose; the propagandist swings a watch on a chain like a hypnotist; a political leader knits for Putin. These caricatures exaggerate the absurdity of Putin’s enablers while exposing how destructive and dangerous they are. Their clever twists of truth during the trial are determined declarations of innocence, spoken even as the impact of their horrific deeds can be seen just beyond the courtroom.

Playwright and co-director Sasha Denisova asks the audience to lean into a world that can feel far removed from us, which is why the immersive nature of the production becomes so powerful. The stage includes a claw-footed tub and several rocking horses — which become places to lounge, seduce, or simply sit. In addition to an array of projections, there’s a jukebox that comes to life to start the play, a pool table, a forbidding mask, and other props that come into focus as needed. There are moments in “The Gaaga,” which is also offered as a virtual production, when some projections clearly reflect choices made for the virtual audience. Characters pick up cameras and point them at each other unobtrusively, while at other times actors …