Lech, by his 30s, has already burned himself in a relationship and is now enjoying bachelor life in an apartment with a friend. But a friend suddenly grows up and decides to move in with his girlfriend, whom he found in the STPP — "Potential Partner Selection Bureau". Lech does not immediately, but decides to also try to find "compatibility love" based on computer modulations. And finds it! But there is a problem: she has already found love for herself, and this is not Lech.