“Abandon all hope ye who enter here”. Such reads the sign that confronts Queen Lillian and King Harold as they approach the unfriendly terrain of Rumpelstiltskin’s land in the opening scene of Shrek Forever After. 93 minutes later and you are left wondering who the words were really directed at. Beneath the fireworks of what has been celebrated as the the final chapter of a universally adored franchise lies an apology for an exit that is more dogged than triumphant.