This time-slip adventure centres around the powers of a strange-looking watch, found by ten-year-old twins, Becky and Chris. The twins are joined in their adventures by their collie dog, Tan, but someone else at school also wants to get his hands on the watch - class trouble-maker, Luke. Engaved on the back of the watch is a short, cryptic rhyme: 'By a click of the clock, You can go in reverse, Time and Again, For better or worse' The twins discover that clicking a red button above the number twelve causes time to be reversed and they can relive the events of the past hour - and have the potential to affect and change what happened during that time. Humorous, but sometimes unnerving experiences ensue as they find that in trying to change things for the better, their actions have unforeseen knock-on effects and consequences...