Cheer Happy Events

Two families and two sisters who have close personal relationships and are close friends, have a dispute and misunderstanding over a small matter, which leads to suspicion between each other. Since then, they have become enemies and have no contact with each other. Many years later, when the children of the two families gradually grew up, and one day they happily announced the good news of their upcoming marriage, the parents of both parties discovered that the so-called in-laws were "enemies." Suddenly, all the old and new hatreds from the past emerged. Can the two families change from "enemies" to "in-laws", and can the lovers pursue their own happiness?