Brothers decide to stop eternal drudgeries of Ivan with registration and at last - that to register him in Andrey's apartments. However it is easier to tell it, than to make. Tamara offers brothers idea with fictitious marriage and even finds for this purpose a suitable candidacy - the familiar girl Liouba. Andrey and Ivan develop the difficult scheme of threefold divorce proceedings which result has to be a long-awaited Moscow registration. But, as it usually also happens in life, at midpoint the plan glitches.