1. INTRODUCTION

2. DATA REDUCTION AND ANALYSIS
2.1. Targets
2.2. K2 photometry
2.3. Flare detection
2.4. Calibration of Equivalent Duration and Calculation of Flare Energy

3. ARTIFICIAL FLARE INJECTION AND ESTIMATION OF LOWEST DETECTABLE FLARE ENERGY

4. FLARE STATISTICS AND FLARE ENERGY SPECTRUM OF TARGET UCDS

5. SUPER FLARES OBSERVED ON TWO UCDS
5.1. Photometry of superflare observed on L0 dwarf 2MASS J12321827-0951502
5.2. Photometry of superflare observed on M7 dwarf 2MASS J08352366+1029318

6. DISCUSSION AND CONCLUSIONS