A caveman whose wife and kids are kidnapped by some extremely polite boat people.
A slave who run away with his lover after his master dies. They have kids somewhere else.
A man who leaves his lover in order to return to his wife and kids.
A man who leaves his ex-lover whom he is still in love with, in order to survive.
A divorced man who spend some time with his kids, and get told this is the best time of his life.
I suffered through the whole movie hoping for some kind of revelation, which never came. The morale seems to be to enjoy the moments, which has been said a million times before, each and every time more compelling than this. A morale is not a point. A bit of symbolism (boats and shoes) go across the five stories, but (weak, poorly made) symbolism is not a point. The five stories also have thematic similarities, the relationship with lovers, kids, and people having power over you. But a (weak) theme is not a point.
You can claim the store is about being human, but every story that has even been told is about being human. This story (or collection of stories) is just particularly poorly told.