Shen Yan and Su Ting are both time-traveling girls. They both have compassionate hearts, encounter famine and troubled times, and choose to devote all their energy to helping the refugees.
It's just that the former spent all his money and ended up with his family ruined and wandering alone; the latter had a good heart but kept the bottom line and survived the disaster safely.
Also embarking on the road to save the world, the coldness of the world has never changed, only propriety can open the end of the two people's lives.
They also have good intentions, but they all end up in different ways.
Intention: We all have compassion, but our fates have their own twists and turns.