When their mother, struggling with drug addiction, abandons them in their caravan for the summer holidays, Felicity and Harvey must fend for themselves. To keep the gas topped up, the social worker at bay, and – most crucially – the marshmallow jar full, they hatch an unconventional plan to survive.

But as the summer heats up and their clever scheme starts to spiral out of control, they face a question far tougher than any they’ve encountered before: can they hold onto the summer – and each other – forever?

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Flumps was presented as Mercury Original at Mercury Theatre Studio in June 2025,