Frank goes around the flat, collecting old stuff to donate to the church's op-shop including Colin's favourite pair of socks. When Colin finds his socks missing, he assumes his neighbour, Susan has stolen them, in retribution for the offence he made to her lisp. This marks the beginning of a tit-for-tat battle which ends up in the middle of the church's Easter "Rock Mass", with Col and Frank wearing their neighbours dresses!