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A hard-working mom Mira's 9-year-old son Dong-myung collapses out of the blue due to Type-1 diabetes. Realizing Dong-myung now has to painfully take blood tests 365 days, her heart drops. Mira desperately looks for painless blood sugar monitoring devices globally and ends up importing 'DexCom' device, first time ever in Korea. Feeling empathetic to other patients, she begins to help other moms to buy the devices. However, Mira faces accusations of illegal import. She decides to take on the world for those in pain. Will Mira continue this battle, not just for her son but for the greater good?