Zayn left the band. Liam feels dreadful and blames himself for it. He wants to apologize to Zayn, but the problem is, whole thing comes along with seeing Zayn face to face after 6 months, risking confrontation of his 5 years-hidden feelings for Zayn that he have tried his best to hide. (Or the Ziam AU where Liam finally sees Zayn for the first time since he departed from the band and his deepest hidden feelings are on the verge of being slipped from his tongue.)