he gang takes a trip to a local waterpark, ripe with personal agendas and ulterior motives. Dennis feeds off his mantra of "the park provides" and takes on a protégé. Frank and Charlie are determined to ride every ride by any means necessary and Mac and Dee get stuck in a tube slide for most of the day.
Elenco: Charlie Day , Glenn Howerton , Rob McElhenney , Kaitlin Olson , Danny DeVito , Glenn Howerton , Jimmi Simpson , Kaitlin Olson , Lynne Marie Stewart , Mary Elizabeth Ellis , Nate Mooney , Sandy Martin .