In the wake of the deadliest tornado outbreak in more than fifty years, all three chase teams take time to help with the recovery effort. Motivated by the death and destruction they've witnessed, all three teams are rededicated to improving warning t... (more)imes and doing vital research on these deadly storms. Team Dominator fields a new, improved vehicle and tracks a storm right toward one member's childhood home. Team TWISTEX outfits their truck with a brand new probe and a mobile Doppler radar, but mechanical issues threaten to sideline them again. Team TIV adds a mobile tornado siren and chases toward the heart of a twister to warn people while shooting 3D twister footage.