Modern girl Lin Wanxing was accidentally bound to the "Spark Support System". The supermarket in the backyard of her old house was able to travel through time and space, disguised as a farmyard and landed on the Long March Road in 1934. Without telling her family, she used hot porridge, noodles and medicines from the supermarket to feed the hungry and cold Red Army soldiers. This place became a warm haven in the hearts of the soldiers.
She has seen the 13-year-old boy scout Xiao Shitou chewing frozen dried sweet potatoes but giving up the food. She has seen the female health worker Chen Lan treat his comrades with injuries. She has seen Captain Li give up the anti-pyretics to the recruits and carry the high fever himself. The lights of the supermarket are a hidden light on the Long March.
The secret was finally exposed by the 98-year-old great-grandfather Lin Zhenshan - the trumpeter of the Red Army who watched the squad leader die on the grass to save him 80 years ago. When he learned that the supermarket could return to the Long March, the old man tremblingly put on his old military uniform, just asking to see his comrades again.
Later, Lin Wanxing's family decided to hand over the supermarket to the state. The system turned into a time and space channel. When the white-haired great-grandfather held the hand of the young squad leader, when the Red Army soldiers saw through the channel the high-speed rail, the country and the people, the tears and blood spanning eighty years turned into the most affectionate condolences to the martyrs. This is the protection of the martyrs by the younger generations, and it is also the inheritance of faith and family and country.
