google search-result

Hello Support, we created a website (kamerakinderfotorun) with wordpress, theme catch responsive (free) and adapted it with css etc. Everything's fine, but the google search result is wrong (see below). By searching for "kamerakinderfotorun" following is shown: Erstes Menü www.kamerakinderfotorun.de/ Beim Fotofest NRW am Samstag, 5.11. in der Handwerkskammer in Düsseldorf werden die Siegerinnen und Sieger geehrt und erhalten ihre Preise. Außerdem ... "Erstes Menü" is the default main nav-title, so has nothing to do with the nav-title we gave. Looking in the source code of the site there you can find: </header><!-- #masthead --> <nav class="nav-primary search-enabled" role="navigation"> <div class="wrapper"> <h1 class="assistive-text">Erstes Menü</h1> But I cannot find the right place to change it (not in header.php or in other phps...) We want to change "Erstes Menü", but also the text below. Should be something like: Fotorun www.kamerakinderfotorun.de/ Fotorun - was ist das? Trefft euch mit vielen anderen Kindern und Jugendlichen und geht alleine oder mit einer Gruppe an den Start für eine Entdeckungsreise ... (Search result with: "kamerakinderfotorun.de" "fotorun") How to solve this problem? With a seo plugin? With a google webmaster-tool? Thank you in advance for your answer!