Complex sentence: Ben, however, ends up in the hospital due to a series of unexpected accidents when Wallace visits their house for the first time, where Wallace and Chantry run into Wallace's ex-girlfriend, Megan.
Split into simpler sentences: Ben, however, ends up in the hospital due to a series of unexpected accidents when Wallace visits their house for the first time. At the hospital Wallace and Chantry run into Wallace's ex-girlfriend, Megan.