Juniper Mae: Knight of Tykotech City by Sarah Soh

Tykotech City is a marvelous and peaceful place, filled with technology beyond anyone’s wildest dreams. But as power cuts begin to plague the residents, and a sinister force infiltrates the city, the lives of the cityfolk are in terrible danger…​
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It falls to Juniper Mae, a tiny, brave inventor, obsessed with the legends of the Guardian Knights, to overcome her fears and save her city. Can she embody the bravery of the Guardian Knights and invent some cool gadgets to save Tykotech City in time?​