Sans is tired of you. Tired off dying and RESETS. He has tried but failed. He needs a FINAL PLAN to get rid of you. So he goes to alphys and tells her to study his "theory" of RESETS due to determination. After alphys finds the "theory' to be true. Sans tells her everything and they come up with a plan. To stop the resets Sans must become more DETERMINED then you. Either be getting LV or taking the determination from you. and alphys has just the invention for that. THE DETERMINATION EXTRACTOR