Arknights Wiki
EN Contingency Contract Lead Seal banner.png

Contingency Contract #4 – Operation Lead Seal, often simply known as Contingency Contract #4 or Contingency Contract Lead Seal, is the sixth season of the namesake seasonal event in Arknights.

Release date
CN January 19, 2021 ~ February 2, 2021
Global July 13, 2021 ~ July 27, 2021
TW November 25, 2021 ~ December 9, 2021


Permanent Site
Rotating Site
Contingency Contract Lead Seal schedule.png



The Earthborn Metals Half Year Anniversary limited headhunting banner is rerunned.

In addition, all players who had pulled in the original Earthborn Metals banner during the Ancient Forge event will receive Headhunting Data Contracts equal to the amount of pulls they made there (given as an in-game mail).


The following Operators are added to the recruitment pool:

The following tag combinations' rates are adjusted to accomodate the additions:

  • Rare
    • Top Operator + DPS + Slow, Top Operator + Ranged + Slow/Support, Top Operator + Slow/Support, Top Operator + Supporter, Top Operator + Supporter + DPS/Slow/Support (now guarantees Magallan)

Note that all current tags will be refreshed once the recruitment pool are updated.


The following outfits are available in the Outfit Store:




Operator Record/Paradox Simulation

New Operator Records/Paradox Simulations are added for the following Operators:

Operator Operator Record(s) Paradox Simulation
A Piece of Grafitti None
One Packed Daily Schedule The Aesthetics of Explosions
Team Captain Pain Endurance
What You've Gotta Do Passion

Path to Glory

New medals related to the Operator Trust and the Liaison's Medal V are added.